GEC ALSTHOM TRANSPORT SA

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 1133
 
  
 
B60T VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL 172
 
  
 
B61D BODY DETAILS OR KINDS OF RAILWAY VEHICLES 125
 
  
 
B61F RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES, ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING; WHEELS GUARDS; OBSTRUCTION REMOVERS OR THE LIKE 121
 
  
 
C23F NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES 135
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 176
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5991176 Method for processing PWM waves and devices thereforOct 21, 97Nov 23, 99[H02H]
D399496 Power moduleOct 09, 97Oct 13, 98[1303]
5816781 Motor-driven cooling ventilatorJul 01, 96Oct 06, 98[F04B]
5688398 Device for filtering an electrically insulative and thermally conductive liquid medium and a power electronics unit incorporating a device of this kindAug 26, 96Nov 18, 97[B01D, H05K]
5653177 Bogie frameMay 05, 95Aug 05, 97[B61F]
5558724 Method of insulating a magnetic laminationSep 11, 95Sep 24, 96[C23F]
5549365 Control device and method for traction or brakingJun 07, 95Aug 27, 96[B60T]
5521487 Active filter for single-phase overhead contact wire energized locomotiveAug 23, 93May 28, 96[G05F]
5495889 Cooling device for power electronic componentsFeb 09, 94Mar 05, 96[H01L]
5339744 Baggage rack under flap for the passenger space of a rail vehicleFeb 12, 93Aug 23, 94[B61D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6112866 Semi-active suspension system with control circuit having a direct control loop including an inverse model of the damperExpiredJul 08, 97Sep 05, 00[F16F]
6087739 Train set and an electrically powered train including such a setExpiredJun 19, 98Jul 11, 00[B60L]
6082766 Articulated bogey frame and an articulated bogey including such a frameExpiredOct 06, 97Jul 04, 00[B62D]
6067496 Automatic driver system, and a method of generating a speed reference in such a systemExpiredJul 18, 95May 23, 00[B60T]
6034646 Information transmission device and method for systems using radiating waveguidesExpiredFeb 07, 97Mar 07, 00[H01Q]
6031185 Method and a device for grounding the shielding braids of shielded cablesExpiredFeb 18, 98Feb 29, 00[H01R]
5941174 Motorized axle having wheels that rotate independentlyExpiredMay 29, 97Aug 24, 99[B61C]
5736803 Synchronous machine rotorExpiredSep 15, 94Apr 07, 98[H02K]
5721671 Subrack for electronic circuit boards and its supportExpiredOct 24, 95Feb 24, 98[H05K]
5712769 Subrack for electronic circuit boardsExpiredOct 24, 95Jan 27, 98[H05K]
5696682 Automatic driver system and a method of generating an acceleration referenceExpiredOct 25, 95Dec 09, 97[B60K]
5629591 High-availability multicurrent power supply system for the traction unit of a railway locomotiveExpiredDec 12, 94May 13, 97[H02P]
5507660 Electrical connection systemExpiredJun 27, 94Apr 16, 96[H01R]
5508907 Chopper control apparatusExpiredDec 14, 93Apr 16, 96[H02M]
5463963 Method of centering steerable axles of a bogieExpiredJul 20, 94Nov 07, 95[B61F]

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