GEC Alsthom Electromecanique 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
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 192
 
  
 
C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS 136
 
  
 
F01K STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES 127
 
  
 
F02C GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 158

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5795412 Method of manufacturing and repairing a blade made of .alpha.-.beta. titaniumDec 20, 96Aug 18, 98[B23K, C22F]
5567116 Arrangement for clipping stress peaks in a turbine blade rootSep 22, 95Oct 22, 96[F01D]
5495714 Condenser envelope made of concrete for a structurally independent low pressure moduleMay 15, 95Mar 05, 96[F01K]
5447025 Combined gas turbine and steam turbine power plantFeb 22, 94Sep 05, 95[F02C]
5350276 High pressure modules of drum rotor turbines with admission of steam having very high characteristicsApr 16, 93Sep 27, 94[F01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6324746 Method of manufacturing a stable multifilament superconductor with reduced lossesExpiredNov 12, 98Dec 04, 01[H01L]
5873158 Method of manufacturing a multifilament superconductor with resistive barrier integrated into the outer ringExpiredJul 12, 96Feb 23, 99[H01L]
5831506 Stationary induction coil for a solenoidal induction launcher, and a solenoidal induction launcher provided with such a coilExpiredApr 12, 96Nov 03, 98[H01F]
5780932 Electricity generating unit having a combined cycle and including a gas turbine and a steam turbine having a plurality of modulesExpiredDec 14, 95Jul 14, 98[H02K, F02C, H02D, F01D]
5545271 Method of fabricating a titanium alloy part, a titanium alloy part fabricated in this way, and a semi-finished titanium alloy productExpiredJan 24, 95Aug 13, 96[C22F]
5545932 Superconducting switch and application to a charger for a superconducting coilExpiredApr 14, 94Aug 13, 96[H01B]
5524441 Lead-in module for the supply of a low critical temperature superconducting electric loadExpiredDec 02, 94Jun 11, 96[F25B]
5522454 Condenser made of concrete for an axial exhaust steam turbine, with simplified mounting of heat exchange bundlesExpiredMay 11, 95Jun 04, 96[F28F]
5509286 Method and apparatus for surface treating and prestressing the inside wall of a cavityExpiredFeb 03, 95Apr 23, 96[B24C]
5449562 Coating for portions of a part of martensitic steel that rub in rotationExpiredOct 08, 93Sep 12, 95[B22F]
5440888 Apparatus for transferring liquid helium between two devices at different potentialsExpiredJun 07, 94Aug 15, 95[F17C]
5436606 Feed connection for a superconductive coilExpiredFeb 03, 94Jul 25, 95[H01F, H01H, H02H]
5413641 Laser nitriding an element made of titanium alloy by blowing nitrogen and inert gasExpiredOct 08, 93May 09, 95[B23K]
5397954 Elastic support device for stator winding end turnsExpiredJun 16, 93Mar 14, 95[H02K]
5387890 Superconductive coil assembly particularly for a current limiter, and a current limiter including such a coil assemblyExpiredNov 04, 93Feb 07, 95[H01F, H01H, H02H]
5383985 Method of installing an insert serving as a protective cladding on a part made of martensitic steel or of titanium-based alloyExpiredJun 04, 93Jan 24, 95[B32B]
5340530 Method of forming an insert on a part to be clad that is made of steel or of titanium alloyExpiredJun 04, 93Aug 23, 94[B22F]
4735224 Method for stabilizing the flow of fluids at the time of expansion accompanied by kinetic energy degradation, a valve and a pressure reducer for carrying out said methodExpiredAug 11, 86Apr 05, 88[F16K]
4688755 Method for stabilizing the flow of fluids at the time of expansion accompanied by kinetic energy degradation, a valve and a pressure reducer for carrying out said methodExpiredFeb 25, 85Aug 25, 87[F16K]

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