RETRO REFLECTIVE OPTICS

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 5133
 
  
 
H01Q AERIALS 5105
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES2107
 
  
 
H04K SECRET COMMUNICATION; JAMMING OF COMMUNICATION256
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 2283
 
  
 
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 177
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 1150
 
  
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 196
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6300914 Fractal loop antennaAug 12, 99Oct 09, 01[H01Q]
6052606 Reversible keypad and display for a telephone handsetDec 12, 97Apr 18, 00[G09G, H04B, H01S]
5953119 Optical shutter assembly for trace element detectorApr 13, 98Sep 14, 99[G01J]
5894459 Optical recording/reproducing device having a controller for reducing vibrational noise during recording by slowing moving speed of pickupJun 05, 97Apr 13, 99[G11B]
5883602 Wideband flat short foci lens antennaSep 15, 97Mar 16, 99[H01Q]
5841739 Accessing method and apparatus for use in hybrid optical recording deviceFeb 07, 97Nov 24, 98[G11B]
5796372 Folded cross grid dipole antennaJul 18, 96Aug 18, 98[H01Q]
5703854 Disc recording/reproduction apparatus and method for resetting an address control circuit to maximize an address margin of the memoryJun 21, 95Dec 30, 97[G11B]
5684763 Optical recording/reproducing device having control for reducing vibrational noise during recording by slowing moving speed of pickupAug 30, 95Nov 04, 97[G11B]
5675586 Record medium, and method for recording to and reproducing from a record mediumSep 11, 95Oct 07, 97[G11B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
RE42554 Optical detection systemWithdrawnMay 22, 09Jul 19, 11[G01J, H04B, B64D, G01B]
7583229 Method for detection of faulty antenna array elementsExpiredFeb 24, 06Sep 01, 09[H01Q, G01S]
7195349 Ink jet recording apparatusExpiredDec 08, 04Mar 27, 07[B41J]
6865034 Method and apparatus for eliminating alignment error in an optical systemExpiredJul 08, 03Mar 08, 05[G02B, H01S]
6754013 Adjustable mount for optical componentsExpiredAug 12, 02Jun 22, 04[G02B]
6661964 Signal recording and reproducing method and storage medium processorExpiredAug 16, 99Dec 09, 03[H04N]
6396450 Programmable image antennaExpiredMay 11, 01May 28, 02[H01J]
5293176 Folded cross grid dipole antenna elementExpiredNov 18, 91Mar 08, 94[H01Q]
5161117 Floating point conversion device and methodExpiredJun 05, 89Nov 03, 92[G06F]
5096880 Method and apparatus for inducing grain orientation by magnetic and electric field ordering during bulk superconductor synthesisExpiredApr 20, 90Mar 17, 92[H01B]
5018099 Comparison circuitExpiredJan 08, 90May 21, 91[G11C]
4965810 Digital differential phase-shift keyed decoderExpiredNov 17, 88Oct 23, 90[H03D]
4939121 Method and apparatus for inducing grain orientation by magnetic and electric field ordering during bulk superconductor synthesisExpiredOct 20, 88Jul 03, 90[B06B, C22C]
4894766 Power supply frequency converterExpiredNov 25, 88Jan 16, 90[H02M]

Top Inventors for This Owner

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