BMW ROLLS-ROYCE GMBH

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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 164
 
  
 
F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 1109

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6022190 Turbine impeller disk with cooling air channelsFeb 06, 98Feb 08, 00[F01D]
5483431 Lighting apparatus shippable in a flat conditionOct 27, 93Jan 09, 96[F21V]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4838028 Cooling and damping arrangement for gas turbine bearingsExpiredApr 25, 88Jun 13, 89[F02C]
4819775 Free wheel with clamping bodiesExpiredSep 01, 87Apr 11, 89[F16D]
4776163 Gas turbine power unitExpiredJun 26, 87Oct 11, 88[F02C]
4729218 Gas turbine engine with generator arrangementExpiredAug 04, 86Mar 08, 88[F02C]
4315660 Aerodynamic multiple-wedge resilient bearingExpiredMar 10, 80Feb 16, 82[F16C]

Top Inventors for This Owner

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