Detection Systems, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 3163
 
  
 
H04M TELEPHONIC COMMUNICATION 3160
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100
 
  
 
G07C TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS, OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE 146
 
  
 
H03B GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS 162
 
  
 
H03K PULSE TECHNIQUE 1130
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 1110

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6493435 Alarm system interfaceApr 06, 00Dec 10, 02[H04M]
6342834 Personal security system with alarm location trackingApr 22, 96Jan 29, 02[G08B]
6326905 Coded rotary switch with contacts at common radiusAug 10, 99Dec 04, 01[H03M]
6268797 Integrated portable tracking signal and access authorization signal generatorMar 15, 00Jul 31, 01[G07C]
6163257 Security system having event detectors and keypads with integral monitorOct 29, 97Dec 19, 00[G08B]
6154525 Security system with call forwarding activationMay 11, 98Nov 28, 00[H04M]
6107930 Security system keypad illuminated by proximate motionOct 29, 97Aug 22, 00[G05B]
5943394 Event detection system with dialer interceptMar 19, 98Aug 24, 99[H04M]
5898367 Personal security system with weighted receiver locationsDec 11, 96Apr 27, 99[G08B]
5774051 Security system with multi-function transmitterNov 27, 95Jun 30, 98[G08B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6493687 Apparatus and method for detecting glass breakExpiredDec 18, 99Dec 10, 02[G06F]
D358351 Smoke detector housingExpiredJul 18, 94May 16, 95[]
D358352 Smoke detector housingExpiredJul 19, 94May 16, 95[]
D358353 Smoke detector housingExpiredJul 18, 94May 16, 95[]
D339078 Smoke detector housingExpiredMar 02, 92Sep 07, 93[]
D339079 Passive infrared intruder detection housingExpiredMar 02, 92Sep 07, 93[]
5233640 Security system with backup dialerExpiredJan 11, 91Aug 03, 93[H04M]
5093656 Active supervision of motion-detection systemsExpiredMar 12, 90Mar 03, 92[G08B]
5077548 Dual technology intruder detection system with sensitivity adjustment after "default"ExpiredJun 29, 90Dec 31, 91[G08B]
5057816 Multizone intruder detection system with forced walk-testExpiredAug 31, 90Oct 15, 91[G08B]
5057817 Intruder detection system with passive self-supervisionExpiredAug 31, 90Oct 15, 91[G08B]
5043703 Supervision of autodyne microwave motion-detection systemExpiredFeb 12, 90Aug 27, 91[G08B]
4963749 Quad element intrusion detectionExpiredFeb 28, 89Oct 16, 90[G01J]
4920268 Passive infrared detection system with substantially uniform sensitivity over multiple detection zonesExpiredJan 31, 89Apr 24, 90[G01J]
4876445 Intrusion detection device with extended field of viewExpiredMay 16, 88Oct 24, 89[G01V]
4864136 Passive infrared detection system with three-element, single-channel, pyroelectric detectorExpiredMay 02, 88Sep 05, 89[G01J]
4764755 Intruder detection system with false-alarm-minimizing circuitryExpiredJul 27, 87Aug 16, 88[G08B]
4746906 Dual technology intruder detection system with modular opticsExpiredJun 30, 86May 24, 88[G08B]
D293089 Smoke detector housingExpiredFeb 01, 85Dec 08, 87[]
4689486 Folded optical system for radiation detection deviceExpiredNov 29, 85Aug 25, 87[G01J]

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