GEC Alsthom SA

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 263
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING271
 
  
 
H01B CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING, OR DIELECTRIC PROPERTIES 272
 
  
 
B60D VEHICLE CONNECTIONS 120
 
  
 
B60G VEHICLE SUSPENSION ARRANGEMENTS 150
 
  
 
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 WAVES1108
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 193
 
  
 
H01Q AERIALS 1109
 
  
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 1101

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5557072 Superconductive conductor presenting improved protection against partial transitionsMar 26, 92Sep 17, 96[H01B]
5430455 Microwave location systemAug 28, 92Jul 04, 95[H01Q, G01S]
5328326 Impulse turbine with a drum rotor, and improvements to such turbinesApr 17, 92Jul 12, 94[F01D]
5322267 Damper device, in particular for railroad vehiclesNov 24, 92Jun 21, 94[B60G]
5321597 Galvanic isolation device for direct current electrical signals or electrical signals likely to include a direct current componentOct 13, 93Jun 14, 94[H02M]
5318270 Valve with a crenellated seatNov 18, 92Jun 07, 94[F16K]
5319154 Method of cooling a current feed for very low temperature electrical equipment and device for implementing itNov 19, 91Jun 07, 94[H01B]
5308227 Drum rotor for an impulse steam turbine having blades mounted in longitudinal grooves, and an impulse steam turbine including such a motorJan 07, 93May 03, 94[F01D]
5289093 Antispin and antilock methods for an electric traction vehicleOct 30, 92Feb 22, 94[H02P]
5286932 Vacuum bulb provided with electrical insulationJul 24, 92Feb 15, 94[H01H]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6145445 Rail vehicle bogie, a method of machining the bogie, and a tool for implementing the methodExpiredOct 08, 98Nov 14, 00[B61F]
5455225 Method of producing a metal superconductive ceramic connectionExpiredSep 22, 93Oct 03, 95[B22F]
5396393 Pumping stationExpiredFeb 04, 93Mar 07, 95[F03B]
5374922 Device for determining the state of an apparatus, and in particular the open or closed state of an electrical apparatus by means of auxiliary contactsExpiredOct 14, 92Dec 20, 94[G08B]
5357068 Sulfur hexafluoride isolating circuit-breaker and use thereof in prefabricated stations, substations, and baysExpiredNov 17, 92Oct 18, 94[H01H]
5350892 Medium tension circuit-breaker for indoor or outdoor useExpiredNov 17, 92Sep 27, 94[H01H]
5331319 Device for signalling the position of a mobile memberExpiredApr 16, 92Jul 19, 94[G08C]
5317246 Device for controlling the torque of an asynchronous electric motor by controlling the phase of the motor stator voltageExpiredNov 24, 92May 31, 94[H02P]
5308831 Method of making a connection between a high critical temperature superconductive ceramic and a superconductor based on niobium-titaniumExpiredJun 26, 92May 03, 94[B23K]
5304760 Ultra-high-tension circuit-breakerExpiredSep 30, 92Apr 19, 94[H01H]
5296661 Hybrid circuit-breaker for interrupting currents having high dc componentsExpiredNov 16, 92Mar 22, 94[H01H]
5293014 Circuit breaker with triple movement for high or medium voltagesExpiredNov 03, 92Mar 08, 94[H01H]
5290103 Optical fiber temperature sensorExpiredNov 13, 92Mar 01, 94[G01K, G01J]
5290760 Method of manufacturing an electrical contact for a superconductive ceramicExpiredJun 03, 92Mar 01, 94[B05D]
5286933 Vacuum circuit-breaker equipped with self-diagnosis meansExpiredNov 16, 92Feb 15, 94[G01L, G01R, H01H]
5266758 SF.sub.6 circuit breaker having an incorporated capacitorExpiredOct 24, 91Nov 30, 93[H01H]
5262605 Surge-limiting circuit breakerExpiredOct 31, 90Nov 16, 93[H01H]
5258589 High- and medium-voltage circuit breaker with lower operating energyExpiredJul 23, 92Nov 02, 93[H01H]
5258590 Medium- or high-tension circuit breaker having abutting arcing contactsExpiredJul 28, 92Nov 02, 93[H01H]
5250508 Superconductor current-limiting apparatusExpiredSep 16, 91Oct 05, 93[H02H]

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