US Patent No: 5,055,851

Number of patents in Portfolio can not be more than 2000

Vehicle location system

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Abstract

A system for determining a location of a selected vehicle from which an alarm signal is generated which includes a fixed array of cellular sites each site having a wireless signal detecting and generating units each of which is capable of receiving an input alarm signal having a signal strength which is a function of the distance between the position of the vehicle generating the alarm signal and the position of each of the wireless signal detecting units. Each unit also is capable of transmitting an output signal which is a function of the strength of the input alarm signal. The system also includes a main wireless signal detecting apparatus for receiving an output signal from each of the wireless signal detecting and generating units and a control monitoring unit which is coupled to the main woreless signal detecting apparatus, for receiving output signals there from, each of the output signals being a function of the strength of the received input alarm signal, for determining the approximate location of the selected vehicle from which the alarm signal is generated.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
COMCAST INVESTMENT HOLDINGS, INC.PHILADELPHIA, PA3
COMCAST TM, INC.PHILADELPHIA, PA3

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sheffer, Eliezer A San Diego, CA 11 1514

Cited Art

Patent Info (Count) # Cites Year
 
Bell Telephone Laboratories, Incorporated (1)
4,475,010 High density cellular mobile radio communications 175 1983
 
COMCAST TM, INC. (1)
4,891,650 Vehicle location system 265 1988
 
CONOCO INC. (1)
4,247,846 Alarm notification apparatus 10 1979
 
HARRIS CORPORATION (1)
4,651,157 Security monitoring and tracking system 197 1985
 
Hughes Aircraft Company (1)
4,740,792 Vehicle location system 285 1986
 
MILLER, PETER (1)
4,577,182 Alarm system 69 1984
 
Repa Feinstanzwerk GmbH (1)
4,369,426 Emergency distress signal system for motor vehicles 34 1980
 
SECURITY RESPONSE L.L.C. (1)
4,494,119 Distress radiolocation method and system 124 1983
 
Other [Check patent profile for assignment information] (2)
4,187,497 Portable vehicle alarm system 20 1978
4,596,988 Remote controlled tracking transmitter and tracking support system 65 1983

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
TELECOMMUNICATION SYSTEMS, INC. (61)
7,110,773 Mobile activity status tracker 39 2000
6,891,811 Short messaging service center mobile-originated to HTTP internet communications 37 2000
7,519,654 Web gateway multi-carrier support 8 2000
7,428,510 Prepaid short messaging 7 2001
7,127,264 Mobile originated interactive menus via short messaging services 38 2001
7,522,911 Wireless chat automatic status tracking 4 2001
7,809,382 Short message distribution center 8 2001
7,853,272 Wireless network tour guide 4 2001
7,426,380 Location derived presence information 16 2003
7,424,293 User plane location based service using message tunneling to support roaming 26 2003
7,844,285 Intelligent queue for information teleservice messages with superseding updates 2 2004
8,195,205 Gateway application to support use of a single internet address domain for routing messages to multiple multimedia message service centers 0 2004
7,991,411 Method to qualify multimedia message content to enable use of a single internet address domain to send messages to both short message service centers and multimedia message service centers 6 2004
7,860,068 Intelligent delivery agent for short message distribution center 8 2005
7,355,990 Mobile-originated to HTTP internet communications 4 2005
7,903,791 Enhanced E911 location information using voice over internet protocol (VoIP) 1 2005
RE41006 Inter-carrier short messaging service providing phone number only experience 0 2005
7,548,158 First responder wireless emergency alerting with automatic callback and location triggering 2 2006
8,150,363 Enhanced E911 network access for call centers 1 2006
7,945,026 Voice over internet protocol (VoIP) E911 metro street address guide (MSAG) validation 0 2006
7,640,031 Mobile originated interactive menus via short messaging services 0 2006
8,463,284 Short messaging system (SMS) proxy communications to enable location based services in wireless devices 0 2006
7,894,825 Mobile activity status tracker 3 2006
7,907,551 Voice over internet protocol (VoIP) location based 911 conferencing 2 2006
7,626,951 Voice Over Internet Protocol (VoIP) location based conferencing 35 2006
7,933,385 Emergency alert for voice over internet protocol (VoIP) 4 2006
8,290,505 Consequential location derived information 0 2006
7,430,425 Inter-carrier digital message with user data payload service providing phone number only experience 4 2006
8,099,105 Device based trigger for location push event 0 2006
8,059,789 Automatic location identification (ALI) emergency services pseudo key (ESPK) 0 2006
7,949,773 Wireless internet gateway 0 2007
7,912,446 Solutions for voice over internet protocol (VoIP) 911 location services 2 2007
7,966,013 Roaming gateway enabling location based services (LBS) roaming for user plane in CDMA networks without requiring use of a mobile positioning center (MPC) 1 2007
8,208,605 Extended efficient usage of emergency services keys 0 2007
8,032,112 Location derived presence information 0 2008
7,890,127 Inter-carrier messaging service providing phone number only experience 5 2008
8,260,329 Mobile-originated to HTTP communications 0 2008
7,853,511 Prepaid short messaging 1 2008
7,890,102 User plane location based service using message tunneling to support roaming 0 2008
8,185,087 Emergency 911 data messaging 0 2008
7,840,208 Intelligent queue for information teleservice messages with superceding updates 1 2008
8,060,429 Prepaid short messaging 0 2008
7,929,530 Ancillary data support in session initiation protocol (SIP) messaging 1 2008
7,894,797 Wireless chat automatic status signaling 0 2009
7,809,359 Wireless chat automatic status tracking 1 2009
7,933,615 Mobile originated interactive menus via short messaging services method 1 2009
8,068,587 Nationwide table routing of voice over internet protocol (VOIP) emergency calls 0 2009
7,764,961 Mobile based area event handling when currently visited network does not cover area 16 2009
8,150,364 Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging 0 2009
8,249,589 Mobile based area event handling when currently visited network does not cover area 0 2010
8,073,477 Short message distribution center 0 2010
8,019,368 Intelligent queue for information teleservice messages with superceding updates 1 2010
8,126,458 User plane location based service using message tunneling to support roaming 0 2011
8,244,220 Wireless chat automatic status tracking 0 2011
8,385,881 Solutions for voice over internet protocol (VoIP) 911 location services 0 2011
8,190,151 Roaming gateway enabling location based services (LBS) roaming for user plane in CDMA networks without requiring use of a mobile positioning center (MPC) 0 2011
8,244,218 Intelligent queue for information teleservice messages with superceding updates 0 2011
8,175,953 Prepaid short messaging 0 2011
8,265,673 Short message distribution center 0 2011
8,406,728 Enhanced E911 network access for call centers 0 2012
8,369,825 Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging 0 2012
 
OMEGA PATENTS, L.L.C. (37)
7,031,835 Vehicle tracker cooperating with a starter interrupt and related methods 8 2001
6,809,659 Vehicle tracker with test features and related methods 12 2001
6,606,561 Vehicle tracker including input/output features and related methods 10 2001
6,522,267 Vehicle tracker conserving codes and related methods 23 2001
6,512,465 Vehicle tracker including stationary time determination and associated methods 31 2001
6,512,466 Vehicle tracker with power saving features and related methods 20 2001
6,509,868 Vehicle tracker with user notifications and associated methods 17 2001
6,507,786 Vehicle tracker with user registration reminder and related methods 32 2001
6,924,750 Vehicle tracking unit for controlling operable vehicle devices using a vehicle data bus and related methods 18 2002
6,844,827 Vehicle tracker including a connector for an upgrade device and related methods 10 2002
6,819,269 Vehicle tracker including battery monitoring feature and related methods 26 2002
6,816,089 Vehicle tracker having find alert features and related methods 7 2002
6,803,861 Vehicle tracking unit with fault condition diagnosis and related methods 10 2002
6,798,355 Vehicle tracker including security device monitoring bypass feature and related methods 4 2002
6,798,356 Vehicle tracking unit providing direction deviation tracking and related methods 9 2002
6,784,809 Vehicle tracker including override feature and related methods 9 2002
6,771,188 Vehicle control system for controlling a vehicle function including a vehicle tracking unit and related methods 5 2002
6,765,499 Vehicle tracker unit providing variable frequency transmission and related methods 3 2002
6,765,500 Vehicle tracker including missed call feature and related methods 5 2002
6,744,384 Vehicle tracker having switchable polarity output terminals and related methods 5 2002
6,741,187 Vehicle tracker providing vehicle alarm alert features and related methods 59 2002
6,737,989 Vehicle tracker including variable frequency transmission and related methods 9 2002
6,703,946 Vehicle tracking unit having a self diagnostic mode and related methods 6 2002
6,693,563 Vehicle tracking unit providing theft alert notifications and related methods 8 2002
6,804,605 Vehicle tracker with user registration reminder and related methods 10 2002
6,888,495 Vehicle tracker with user notifications and associated methods 16 2002
7,149,623 Vehicle tracker including input/output features and related methods 9 2003
7,720,597 Vehicle tracker including input/output features and related methods 1 2005
7,502,687 Vehicle tracker including input/output features and related methods 17 2005
7,343,244 Vehicle tracker including input/output features and related methods 3 2005
7,312,696 Vehicle tracker including input/output features and related methods 4 2005
7,305,293 Vehicle tracker including input/output features and related methods 1 2005
6,972,667 Vehicle tracker including input/output features and related methods 9 2005
7,015,830 Vehicle tracking unit for controlling operable vehicle devices using a vehicle data bus and related methods 12 2005
7,671,727 Speed exceeded notification device for vehicle having a data bus and associated methods 5 2007
7,659,810 Speed exceeded notification device for vehicle having a data bus and associated methods 1 2007
7,659,811 Vehicle device to activate a visual or audible alert and associated methods 3 2007
 
FUNDAMENTAL WIRELESS, LLC. (15)
5,299,132 Vehicle locating and communicating method and apparatus using cellular telephone network 272 1992
5,398,190 Vehicle locating and communicating method and apparatus 200 1994
5,513,111 Vehicle locating and communicating method and apparatus 108 1994
5,734,981 Method and apparatus for call delivery to a mobile unit 142 1995
5,519,621 Vehicle locating and communicating method and apparatus 178 1995
5,699,275 System and method for remote patching of operating code located in a mobile unit 130 1995
5,544,225 Data messaging in a cellular communications network 178 1995
5,771,455 Data messaging in a communications network using a feature request 103 1995
5,652,707 Vehicle locating and communicating method and apparatus 72 1996
5,832,394 Vehicle locating and communicating method and apparatus 56 1997
6,009,330 Method and apparatus for call delivery to a mobile unit 64 1998
6,295,449 Data messaging in a communications network using a feature request 80 1998
5,884,221 Vehicle locating and communicating method and apparatus 30 1998
6,240,295 Data messaging in a communications network using a feature request 43 1998
6,148,202 Vehicle locating and communicating method and apparatus 35 1998
 
TracBeam LLC (13)
7,764,231 Wireless location using multiple mobile station location techniques 26 1997
7,274,332 Multiple evaluators for evaluation of a purality of conditions 55 1998
6,249,252 Wireless location using multiple location estimators 386 1999
6,236,365 Location of a mobile station using a plurality of commercial wireless infrastructures 431 1999
7,525,484 Gateway and hybrid solutions for wireless location 56 2001
6,952,181 Locating a mobile station using a plurality of wireless networks and applications therefor 143 2001
7,714,778 Wireless location gateway and applications therefor 32 2001
7,298,327 Geographic location using multiple location estimators 67 2002
7,812,766 Locating a mobile station and applications therefor 9 2005
7,903,029 Wireless location routing applications and architecture therefor 9 2006
8,135,413 Platform and applications for wireless location and other complex services 7 2007
8,032,153 Multiple location estimators for wireless location 6 2008
8,082,096 Wireless location routing applications and architecture therefor 4 2008
 
SIPCO, LLC (11)
7,756,086 Method for communicating in dual-modes 2 2004
7,295,128 Smoke detection methods, devices, and systems 33 2005
8,064,412 Systems and methods for monitoring conditions 5 2005
7,697,492 Systems and methods for monitoring and controlling remote devices 26 2005
8,013,732 Systems and methods for monitoring and controlling remote devices 7 2009
8,171,136 System and method for transmitting pollution information over an integrated wireless network 0 2010
8,446,884 Dual-mode communication devices, methods and systems 0 2010
8,212,667 Automotive diagnostic data monitoring systems and methods 0 2011
8,379,564 System and method for monitoring remote devices with a dual-mode wireless communication protocol 0 2011
8,223,010 Systems and methods for monitoring vehicle parking 0 2011
8,410,931 Mobile inventory unit monitoring systems and methods 0 2011
 
TRIMBLE NAVIGATION LIMITED (10)
5,418,537 Location of missing vehicles 309 1992
5,669,061 Automatic cellular phone tracking 67 1994
5,777,580 Vehicle location system 162 1995
5,812,959 Automated vehicle recommendation system 33 1996
5,969,595 Security for transport vehicles and cargo 51 1996
6,046,687 Clandsetine location reporting for missing vehicles 36 1997
5,960,337 Method for responding to an emergency event 25 1997
6,198,930 Automatic cellular phone tracking 38 1997
6,233,517 Predictive model for automated vehicle recommendation system 7 1998
6,539,307 System and method for monitoring interaction between objects and multiple mobile units 9 2001
 
AMERICAN CALCAR, INC. (7)
6,233,506 Technique for effectively locating an object 37 1999
6,438,465 Technique for effectively searching for information in a vehicle 13 2001
6,542,795 Technique for providing information and control responsive to a request in a vehicle 10 2002
7,062,362 Technique for preconditioning climate control in a vehicle 4 2004
6,922,616 Technique for effectively maintaining components of a vehicle 19 2004
6,859,687 Technique for temporal climate control in a vehicle 9 2004
7,499,778 Technique for informing a user of a service provider for servicing a vehicle 2 2006
 
AT&T WIRELESS SERVICES, INC. (6)
5,732,354 Method and apparatus for determining the location of a mobile telephone 124 1995
5,724,660 Method and apparatus for locating a mobile station by comparing calculated location area with GPS coordinates 102 1996
6,167,274 Method for locating a mobile station 80 1997
6,404,388 Method and apparatus for enhanced 911 location using power control in a wireless system 19 2000
6,590,533 Method and apparatus for enhanced 911 location using power control in a wireless system 6 2002
6,972,717 Method and apparatus for enhanced 911 location using power control in a wireless system 7 2003
 
SECUREALERT, INC. (6)
7,936,262 Remote tracking system with a dedicated monitoring center 1 2006
7,737,841 Alarm and alarm management system for remote tracking devices 3 2006
7,804,412 Remote tracking and communication device 2 2008
8,232,876 System and method for monitoring individuals using a beacon and intelligent remote tracking device 0 2009
8,013,736 Alarm and alarm management system for remote tracking devices 1 2010
8,031,077 Remote tracking and communication device 1 2010
 
STATSIGNAL IPC, LLC (6)
5,714,931 Personalized security system 78 1996
7,137,550 Transmitter for accessing automated financial transaction machines 23 1997
5,926,103 Personalized security system 82 1997
7,397,907 Multi-function general purpose transceiver 33 2001
7,079,810 System and method for communicating with a remote communication unit via the public switched telephone network (PSTN) 23 2003
8,031,650 System and method for monitoring remote devices with a dual-mode wireless communication protocol 1 2004
 
AERIS COMMUNICATIONS, INC. (5)
6,144,859 Wireless cellular communicator system and apparatus 66 1995
5,889,474 Method and apparatus for transmitting subject status information over a wireless communications network 253 1995
5,999,808 Wireless gaming method 359 1996
5,845,203 Remote access application messaging wireless method 191 1996
6,285,868 Wireless communications application specific enabling method and apparatus 105 1997
 
VEHICLE IP, LLC (5)
5,724,243 Method and apparatus for determining expected time of arrival 111 1995
5,983,108 Method and apparatus for a nation-wide cellular telephone network 14 1995
5,694,322 Method and apparatus for determining tax of a vehicle 112 1995
5,970,481 Method and apparatus for determining tax of a vehicle 34 1997
5,987,377 Method and apparatus for determining expected time of arrival 142 1998
 
CELL-LOC LOCATION TECHNOLOGIES INC. (4)
6,330,452 Network-based wireless location system to position AMPs (FDMA) cellular telephones, part I 87 1998
6,266,014 Methods and apparatus to position a mobile receiver using downlink signals part IV 47 1998
6,208,297 Methods and apparatus to position a mobile receiver using downlink signals, part I 31 1998
6,204,812 Methods and apparatus to position a mobile receiver using downlink signals, part II 33 1998
 
FUTURE CAPITAL L.L.C. (4)
5,454,027 Phantom mobile identification number method and apparatus 64 1993
5,913,170 Locating system and method using a mobile communications network 126 1994
5,579,376 Phantom mobile-identification number method and apparatus 93 1995
6,748,226 System and method for locating a mobile unit within the service area of a mobile communications network 35 1998
 
GARMIN CORPORATION (4)
6,492,941 Combined global positioning system receiver and radio 30 2002
7,196,659 Combined global positioning system receiver and radio 8 2002
7,330,150 Combined global positioning system receiver and radio 6 2006
7,456,784 Combined global positioning system receiver and radio 2 2007
 
HYSKY TECHNOLOGIES, INC. (4)
5,765,112 Low cost wide area network for data communication using outbound message specifying inbound message time and frequency 17 1995
5,734,963 Remote initiated messaging apparatus and method in a two way wireless data communications network 80 1995
5,589,844 Automatic antenna tuner for low-cost mobile radio 26 1995
5,640,442 Technique for determining propagating and clear frequency to be used in wide area wireless data communications network 26 1996
 
ROUND ROCK RESEARCH, LLC (4)
5,894,266 Method and apparatus for remote monitoring 96 1996
7,825,867 Methods and systems of changing antenna polarization 3 2007
7,936,268 Selectively coupling to feed points of an antenna system 1 2007
7,932,867 Methods and systems of changing antenna polarization 0 2010
 
U S WEST TECHNOLOGIES, INC. (4)
5,602,903 Positioning system and method 107 1994
5,596,625 Method for routing emergency calls during busy interface channel conditions 119 1994
5,570,412 System and method for updating a location databank 166 1994
5,508,707 Method for determining position by obtaining directional information from spatial division multiple access (SDMA)-equipped and non-SDMA-equipped base stations 112 1994
 
WNS HOLDINGS, LLC (4)
5,351,194 Apparatus and method for closing flight plans and locating aircraft 109 1993
5,673,305 Apparatus and method for tracking and reporting the location of a motor vehicle 226 1994
6,314,366 Satellite based collision avoidance system 128 1994
5,714,948 Satellite based aircraft traffic control system 198 1996
 
CATERPILLAR INC. (3)
7,677,452 Method and system for providing signatures for machines 0 2006
7,819,312 Method and system for operating machines 0 2006
7,690,565 Method and system for inspecting machines 0 2006
 
H. R. Ross Industries, Inc. (3)
5,669,470 Roadway-powered electric vehicle system 57 1994
5,573,090 Raodway-powered electric vehicle system having onboard power metering and communication channel features 43 1994
6,421,600 Roadway-powered electric vehicle system having automatic guidance and demand-based dispatch features 15 2000
 
HUNT TECHNOLOGIES, LLC (3)
7,650,425 System and method for controlling communication between a host computer and communication devices associated with remote devices in an automated monitoring system 38 2001
7,263,073 Systems and methods for enabling a mobile user to notify an automated monitoring system of an emergency situation 38 2001
7,103,511 Wireless communication networks for providing remote monitoring of devices 151 2001
 
PROGRESSIVE CASUALTY INSURANCE COMPANY (3)
8,090,598 Monitoring system for determining and communicating a cost of insurance 12 2004
8,140,358 Vehicle monitoring system 8 2008
8,311,858 Vehicle monitoring system 0 2012
 
PROGRESSIVE DIRECTRAC SERVICE CORP. (3)
5,797,134 Motor vehicle monitoring system for determining a cost of insurance 205 1996
6,064,970 Motor vehicle monitoring system for determining a cost of insurance 148 1998
6,868,386 Monitoring system for determining and communicating a cost of insurance 69 2000
 
FUJITSU LIMITED (2)
5,572,189 Alarm collection apparatus of central maintenance operation center 4 1993
7,751,829 Method and apparatus for location determination using mini-beacons 4 2004
 
GARMIN LTD. (2)
7,142,900 Combined global positioning system receiver and radio 15 2001
7,729,684 Combined global positioning system receiver and radio 3 2006
 
GARMIN SWITZERLAND GMBH (2)
7,925,320 Electronic device mount 2 2006
7,962,165 Combined global positioning system receiver and radio 0 2010
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
6,433,685 System and method for locating lost or stolen articles 21 2001
6,826,162 Locating and mapping wireless network devices via wireless gateways 28 2001
 
HITACHI SOFTWARE ENGINEERING CO., LTD. (2)
5,434,904 Mobile termainal position information detection method and system using the method 32 1993
5,502,758 Mobile terminal position information detection method and system using the method 18 1995
 
INNOVATIVE GLOBAL SYSTEMS, LLC (2)
7,881,838 Driver activity and vehicle operation logging and reporting 8 2009
8,032,277 Driver activity and vehicle operation logging and reporting 0 2011
 
IPCO, LLC (2)
8,000,314 Wireless network system and method for providing same 1 2005
8,233,471 Wireless network system and method for providing same 0 2009
 
MICRON TECHNOLOGY, INC. (2)
8,115,637 Systems and methods to selectively connect antennas to receive and backscatter radio frequency signals 0 2008
8,405,509 Systems and methods to selectively connect antennas to receive and backscatter radio frequency signals 0 2011
 
MOTOROLA MOBILITY LLC (2)
5,748,147 Position locating rescue transceiver 62 1994
5,608,854 Method and apparatus for displaying information in a communication system 23 1995
 
MOTOROLA SOLUTIONS, INC. (2)
5,661,492 Personal alarm location system and method 24 1994
5,778,304 Method for providing communication services based on geographic location 161 1995
 
MOTOROLA, INC. (2)
5,212,807 Method of automatic path map generation for simulcast transmission system 15 1991
5,559,527 Method and apparatus for displaying performance metrics in a communication system 17 1995
 
NEXUS 1994 LIMITED (2)
5,592,180 Direction finding and mobile location system for trunked mobile radio systems 112 1994
5,583,517 Multi-path resistant frequency-hopped spread spectrum mobile location system 91 1994
 
POLARIS WIRELESS, INC. (2)
7,725,111 Location determination using RF fingerprinting 11 2004
8,068,855 Location determination using RF fingerprinting 10 2010
 
SIGNATRON TECHNOLOGY CORPORATION (2)
5,883,598 Position location system and method 84 1995
6,259,404 Position location system and method 33 1999
 
The Boeing Company (2)
7,715,819 Airborne security manager 3 2001
6,947,726 Network security architecture for a mobile network platform 15 2001
 
TRACKMOBILE, INC. (2)
5,515,419 Tracking system and method for tracking a movable object carrying a cellular phone unit, and integrated personal protection system incorporating the tracking system 208 1994
5,844,522 Mobile telephone location system and method 122 1995
 
TRUEPOSITION, INC. (2)
5,327,144 Cellular telephone location system 484 1993
5,608,410 System for locating a source of bursty transmissions cross reference to related applications 164 1994
 
VEHICLE ENHANCEMENT SYSTEMS, INC. (2)
7,117,075 Driver activity and vehicle operation logging and reporting 34 2005
7,555,378 Driver activity and vehicle operation logging and reporting 1 2005
 
VERIZON LABORATORIES INC. (2)
5,519,760 Cellular network-based location system 180 1994
RE38267 Cellular network-based geographic coverage area reporting method and apparatus 17 1998
 
ABSOLUTE SOFTWARE CORPORATION (1)
7,945,709 Security apparatus and method 0 2002
 
ACTIX LIMITED (1)
8,150,417 Mobile device location systems and methods 0 2004
 
AT&T IPM CORP. (1)
5,479,482 Cellular terminal for providing public emergency call location information 358 1994
 
AT&T MOBILITY II LLC (1)
8,174,445 Method and apparatus for enhanced 911 location using power control in a wireless system 0 2005
 
AVAYA INC. (1)
5,963,861 Dealer-locator service and apparatus for mobile telecommunications system 71 1996
 
BOOMERANG TRACKING INC. (1)
6,498,565 Two way tracking system and method using an existing wireless network 18 2001
 
CAPITOL ENERGY RESOURCES INC. (1)
5,890,068 Wireless location system 192 1996
 
CDC PROPRIETE INTELLECTUELLE (1)
5,343,512 Call setup method for use with a network having mobile end users 88 1992
 
CODE ALARM SECURITY SYSTEMS (1)
5,543,778 Security system 71 1993
 
CSR TECHNOLOGY INC. (1)
8,364,164 Cell ID based positioning from cell intersections 0 2006
 
DELPHI TECHNOLOGIES, INC. (1)
8,035,503 Vehicle location reminder system and method 0 2008
 
Detection Systems, Inc. (1)
5,115,224 Personal security system network 58 1991
 
ERICSSON INC. (1)
6,266,534 Systems and methods for locating remote terminals in radiocommunication systems 59 2000
 
GENERAL DYNAMICS DECISION SYSTEMS, INC. (1)
5,519,403 Global positioning system communications multi-interface 259 1993
 
HIGHWAY MASTER L.P. (1)
6,061,558 Method and apparatus for a nation-wide cellular telephone network 12 1998
 
HIGHWAYMASTER COMMUNINCATIONS, INC. (1)
5,799,249 Method and apparatus for a nation-wide cellular telephone network 29 1995
 
HIGHWAYMASTER L.P., A DELAWARE LIMITED PARTNERSHIP (1)
5,539,810 Data messaging in a communications network 189 1993
 
HUGHES ELECTRONICS CORPORATION (1)
5,218,618 Cellular telephone service using spread spectrum transmission 216 1990
 
MESHNETWORKS, INC. (1)
7,167,715 System and method for determining relative positioning in AD-HOC networks 37 2003
 
MOBYTEL, INC. (1)
5,587,715 Method and apparatus for tracking a moving object 226 1993
 
NEXUS TELECOMMUNICATIONS SYSTEMS, LTD. (1)
5,596,330 Differential ranging for a frequency-hopped remote position determination system 92 1995
 
OMRON CORPORATION (1)
7,116,247 Security arrangement with in-vehicle mounted terminal 3 2004
 
PRONET TRACKING SYSTEMS, INC. (1)
6,459,704 Method and system for radio-location determination 20 1997
 
Protect & Defend, Inc. (1)
5,307,048 Vehicle security system including an anti-carjacking system 58 1992
 
Protector 2000, Inc. (1)
5,448,218 Anti-theft alarm system for a motor vehicle 22 1993
 
QWEST COMMUNICATIONS INTERNATIONAL INC. (1)
5,768,686 Method and system for position determination using video dial tone 28 1996
 
REPERAGE BOOMERANG INC. (1)
5,895,436 Vehicle tracking system using cellular network 88 1996
 
SATELLITE TRACKING OF PEOPLE LLC (1)
7,619,513 System and method for tracking movement of individuals 0 2005
 
SHERMAN, WILFRED M. (1)
5,374,936 Security system 67 1994
 
Simms Security Corp. (1)
5,334,974 Personal security system 452 1992
 
SONY CORPORATION (1)
6,075,993 Personal station and information providing system 26 1995
 
STATSIGNAL IPC (1)
7,424,527 System and method for transmitting pollution information over an integrated wireless network 35 2001
 
TATTLETALE PORTABLE ALARM SYSTEMS, INC. (1)
7,327,220 Portable alarm and methods of transmitting alarm data 2 2004
 
TEKLA PEHR LLC (1)
7,853,250 Wireless intrusion detection system and method 7 2003
 
Teletrac, Inc. (1)
6,049,711 Method and apparatus for providing location-based information services 136 1995
 
Thomson-CSF (1)
5,389,935 Automatic system for locating and identifying vehicles in distress 25 1994
 
TIP COMMUNICATIONS LLC (1)
6,871,215 Universal mail wireless e-mail reader 8 2001
 
TRACKMOBILE A CA CORP. (1)
5,218,367 Vehicle tracking system 272 1992
 
TREBLE INVESTMENTS LIMITED LIABILITY COMPANY (1)
5,657,487 Mobile telephone location process making use of handoff data 67 1995
 
VERIZON CORPORATE SERVICES GROUP INC. (1)
7,366,492 Method and system for mobile location detection using handoff information 6 2002
 
XONE, INC. (1)
8,385,964 Methods and apparatuses for geospatial-based sharing of information by multiple devices 0 2011
 
XYPOINT CORPORATION (1)
5,797,091 Personal communication system and method of use 156 1995
 
Other [Check patent profile for assignment information] (13)
5,208,756 Vehicle locating and navigating system 347 1991
5,223,816 Security and communication system with location detection 20 1992
5,289,163 Child position monitoring and locating device 119 1992
5,838,237 Personal alarm device 125 1996
5,983,161 GPS vehicle collision avoidance warning and control system and method 329 1996
5,796,365 Method and apparatus for tracking a moving object 86 1996
5,767,788 Computer aided dispatch and locator cellular system 95 1997
6,275,773 GPS vehicle collision avoidance warning and control system and method 167 1999
6,532,360 Mobile security system with cellular transceiver, position reporting and remote actuation 14 1999
6,487,500 GPS vehicle collision avoidance warning and control system and method 196 2001
7,366,614 Methods and apparatus for emergency rig monitoring 0 2005
8,467,320 Voice over internet protocol (VoIP) multi-user conferencing 0 2006
8,369,967 Alarm system controller and a method for controlling an alarm system 0 2011