GEC-MARCONI LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 4201
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
  
 
A47C CHAIRS 152
 
  
 
E01D BRIDGES 114
 
  
 
H01S DEVICES USING STIMULATED EMISSION191
 
  
 
H04B TRANSMISSION 1209
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 1284
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 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
6249536 LasersJun 14, 99Jun 19, 01[H01S]
6154910 Bridge stabilizationAug 23, 99Dec 05, 00[E01D]
5914569 Switching controller and control device for a low pressure fluorescent lampMar 05, 97Jun 22, 99[H05B]
5491574 Optical signal transmission networkJun 29, 95Feb 13, 96[G01N, H04B]
5432872 Light energy broadening couplerJan 19, 94Jul 11, 95[G02B]
5328240 Support for a seat including a pedestal adapted to receive a vertically inclined columnJun 02, 92Jul 12, 94[A47C]
5311605 Optical devices incorporating slow wave structuresDec 14, 92May 10, 94[G02B]
5291327 Imaging system using focal plane arrayAug 28, 91Mar 01, 94[G02B]
5229833 Optical sensorSep 26, 91Jul 20, 93[G01N]
5193103 Digital phase locked loop circuitJul 15, 91Mar 09, 93[H04I]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8063368 Imaging arrangementExpiredFeb 02, 87Nov 22, 11[G02B]
6373175 Electronic switching devicesExpiredJul 10, 91Apr 16, 02[H01J]
6236144 Acoustic imaging arraysExpiredAug 24, 98May 22, 01[H01L]
6225043 Separation and analysisExpiredAug 20, 96May 01, 01[C12Q, G01N]
6184757 Cryogenic electronic assemblyExpiredJun 03, 98Feb 06, 01[H01P]
6007908 CoatingsExpiredFeb 11, 97Dec 28, 99[C23C]
5942849 Electron field emission devicesExpiredMay 21, 97Aug 24, 99[H01J]
5898401 Continuous wave radar altimeterExpiredJun 09, 88Apr 27, 99[G01S]
5860477 Underwater oil field apparatusExpiredDec 09, 96Jan 19, 99[E21B]
5821544 Electron microscope specimen supportsExpiredAug 28, 96Oct 13, 98[H01J]
5750077 Compact man-portable emergency oxygen supply systemExpiredJul 22, 96May 12, 98[A62B]
5731782 Ranging systemsExpiredFeb 27, 90Mar 24, 98[G01S]
5723304 Immunological detection using two detectable labelsExpiredFeb 27, 95Mar 03, 98[G01N]
5711166 Air separation method and apparatusExpiredJan 22, 97Jan 27, 98[F25J]
5647954 Manufacture of etched substrates such as infrared detectorsExpiredOct 20, 94Jul 15, 97[H01L]
5648740 Switching arrangement with combined attenuation and selection stageExpiredOct 05, 95Jul 15, 97[H03K]
5646784 Helmet display systemExpiredMay 25, 94Jul 08, 97[G02B]
5602478 Reduction of RF field disturbance in magnetic resonance apparatusExpiredSep 19, 94Feb 11, 97[G01R]
5592296 Exhaust gas particle sensorExpiredDec 14, 95Jan 07, 97[G01N]
5577504 Magnetic resonance apparatusExpiredSep 19, 94Nov 26, 96[A61B]

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Top Inventors for This Owner

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