GEC ALSTHOM T&D SA

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 292

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5808257 High-voltage gas-blast circuit-breakerJul 22, 97Sep 15, 98[H01H]
5510591 High tension circuit breaker capable of interrupting fault currents having a delayed zero crossingOct 11, 94Apr 23, 96[H01H]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6339202 Composite material insulative jacket for generator circuit-breakersExpiredMar 16, 98Jan 15, 02[H01H]
6205846 Method of determining with great accuracy the rate of leakage from the case of an electrical apparatusExpiredOct 22, 98Mar 27, 01[H01H]
6064010 Composite insulator end fittingExpiredJun 23, 98May 16, 00[H01B]
6064025 Control means for electrical equipment, E.G. for a high-voltage circuit-breakerExpiredSep 24, 98May 16, 00[H01H]
6015960 Compressed gas interrupter with a rack mechanismExpiredOct 01, 98Jan 18, 00[H01H]
6013888 Generator circuit breaker having a single mechanical control mechanismExpiredOct 29, 98Jan 11, 00[H01H]
5997616 Moisture absorption device for electrical apparatus containing dielectric gasExpiredJun 23, 98Dec 07, 99[B01D]
5994999 Low voltage link for transmitting on/off ordersExpiredJul 16, 98Nov 30, 99[H04B]
5959274 Operating mechanism for high-voltage circuit-breakersExpiredMar 21, 97Sep 28, 99[H01H]
5955716 Interlock control for a circuit breaker and a disconnectorExpiredDec 07, 98Sep 21, 99[H01H]
5952606 Gas-insulated electric cableExpiredApr 18, 97Sep 14, 99[H02G]
5952635 Generator circuit breakerExpiredMay 14, 98Sep 14, 99[H01H]
5939692 Gas-filled interrupter with compressible thermal expansion chamberExpiredJul 23, 98Aug 17, 99[H01H]
5930415 Monitoring device for a gas-insulated cableExpiredOct 14, 97Jul 27, 99[G01M, G02B]
5920051 Compressed-gas cutout having a disconnecting braking structureExpiredJun 03, 97Jul 06, 99[H01H]
5916397 Method of manufacturing an insulator made of a composite materialExpiredJun 17, 96Jun 29, 99[B29C]
5898151 Circuit-breaker with a disconnectorExpiredMay 06, 98Apr 27, 99[H01H]
5889467 Method of monitoring a leakage rate from the envelope of high voltage electrical apparatusExpiredApr 29, 98Mar 30, 99[G08B]
5877465 High-tension circuit-breaker with damperExpiredSep 19, 97Mar 02, 99[H01H]
5859399 Circuit breaker having semi-moving pistonExpiredNov 24, 97Jan 12, 99[H01H]

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