ABB Stal AB

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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
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 169
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6162013 Steam turbineOct 27, 98Dec 19, 00[F01D]
5971018 Valve device for influencing an overpressurized flow of mediaJan 16, 98Oct 26, 99[F16K]
5464318 Control system for extraction and injection of steam from and into a turbineDec 20, 93Nov 07, 95[F01D]
5244285 Hydrostatically mounted squeeze film damperAug 17, 92Sep 14, 93[F16C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6231304 Outlet device for a flow machineExpiredFeb 17, 00May 15, 01[F01D]
6192930 Valve deviceExpiredJul 28, 99Feb 27, 01[F16K]
5564897 Axial turbo-machine assembly with multiple guide vane ring sectors and a method of mounting thereofExpiredSep 30, 94Oct 15, 96[F04D, F01D]
5544596 Method of supplying coal and sulphur absorbent to a combustor and a power plant in which the method is appliedExpiredSep 02, 94Aug 13, 96[F23K]
5347936 Method and a device for preheating a fluidized bedExpiredMar 11, 92Sep 20, 94[F23C]
5335630 Method and device for controlling the power output during combustion in a fluidized bedExpiredOct 08, 92Aug 09, 94[F22B]
5315816 Method and device for temperature control in a combustion plantExpiredJan 08, 93May 31, 94[F02C]
5297622 Method for cooling of dust separated from the flue gases from a PFBC plantExpiredOct 20, 92Mar 29, 94[F28C, F02C]
5241863 Buffer volumeExpiredDec 23, 91Sep 07, 93[G01L]
5234661 Method for manufacturing rings or discs having a blade or vane rimExpiredJun 11, 91Aug 10, 93[B22F]
5193337 Method for operating gas turbine unit for combined production of electricity and heatExpiredJan 15, 92Mar 16, 93[F02C]
5176089 Power plant with combustion of a fuel in a fluidized bedExpiredOct 10, 91Jan 05, 93[F23J]
5176475 Transfer chambers for the conveyor in a pneumatic transport systemExpiredJul 16, 91Jan 05, 93[B65G]
5163384 Power plant with a combustor for combustion in a fluidized bedExpiredDec 23, 91Nov 17, 92[B09B, F22B]
5146856 Power plan with a screw conveyor ash coolerExpiredMar 21, 91Sep 15, 92[F23J]
5082623 Method of manufacturing a split circular ringExpiredMay 31, 90Jan 21, 92[B22F]
5069866 Method for manufacturing a compound pipeExpiredMay 31, 90Dec 03, 91[B22F]
5016435 Method of controlling a PFBC plant in the event of operational disturbance in the gas turbine unitExpiredSep 28, 90May 21, 91[F02C]
5000911 Method in manufacturing blades or vanes of turbinesExpiredMay 31, 90Mar 19, 91[B22F]
4965996 Power plant for burning a fuel in a fluidized bedExpiredDec 16, 88Oct 30, 90[F02C]

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