GEC FERRANTI DEFENCE SYSTEMS LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE30564 Servo systemsJan 25, 79Mar 31, 81[G05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5387973 Detector apparatus for detecting coherent point-source radiationExpiredDec 18, 84Feb 07, 95[G01B]
5252978 Collision warning systemExpiredJul 16, 92Oct 12, 93[G01S]
5245880 Gryoscope control systemExpiredAug 20, 92Sep 21, 93[G01C]
5235405 Detector apparatus for detecing coherent monohromatic point-source radiationExpiredFeb 13, 85Aug 10, 93[G01B]
5223846 Multiple-beam transmission systemExpiredFeb 19, 91Jun 29, 93[H01Q]
5191412 Inspection device for aircraft engineExpiredOct 24, 91Mar 02, 93[H04N, B64D]
5187540 Optical system for the remote determination of position and orientationExpiredOct 30, 91Feb 16, 93[G01B]
5146417 Signal processing apparatus and methodExpiredMar 07, 90Sep 08, 92[G01P]
5137079 Closed circuit cooling systemExpiredDec 28, 90Aug 11, 92[G05D, F28F]
5128610 Current-to-frequency converterExpiredMar 07, 90Jul 07, 92[G01R]
5096297 Multi-oscillator ring laser gyroscope with improved stabilizationExpiredFeb 28, 91Mar 17, 92[G01C]
5092937 Process for treating semiconductorsExpiredJul 13, 90Mar 03, 92[B08B]
D324135 Carrying caseExpiredJan 17, 90Feb 25, 92[]
5091718 Color-monochrome visual display deviceExpiredJan 26, 89Feb 25, 92[G09G]
5059028 Ring laser gyroscope having means for maintaining the beam intensityExpiredFeb 01, 90Oct 22, 91[G01C]
5016020 Transceiver testing apparatusExpiredApr 19, 89May 14, 91[G01R]
5006820 Low reflection input configuration for integrated circuit packagesExpiredJul 03, 89Apr 09, 91[H03H]
4989776 Method of brazing articles containing aluminumExpiredJul 28, 89Feb 05, 91[B23K]
4946090 Seals between ceramic articles or between ceramic articles and metal articlesExpiredAug 09, 88Aug 07, 90[B23K]
4938700 Assembly including two members capable of relative rotation and with electrical interconnections therebetweenExpiredJun 06, 89Jul 03, 90[H01R]

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