BDF IP HOLDINGS LTD.
Patent Owner
Stats
- 91 total patents issued
- 95 Total Apps Published
- Jun 14, 2012 most recent publication
Details
- 91 Issued Patents
- 5 Issued in last 3 years
- 1 Published in last 3 years
- 1,615 Total Citation Count
- Nov 19, 1990 Earliest Filing
- 54 Expired/Abandoned/Withdrawn Patents
Technologies
Intl Class
Technology
# of Patents
Rank
Top Patents (by citation)
Patent #
Title
Filing Date
Issue Date
Intl Class
Cited #
5,366,821 Constant voltage fuel cell with improved reactant supply and control systemMar 13, 92Nov 22, 94[H01M]117
5,798,186 Method and apparatus for commencing operation of a fuel cell electric power generation system below the freezing temperature of waterJun 07, 96Aug 25, 98[H01M]106
6,057,054 Membrane electrode assembly for an electrochemical fuel cell and a method of making an improved membrane electrode assemblyJul 15, 98May 02, 00[H01M]91
6,080,503 Polymer electrolyte membrane fuel cells and stacks with adhesively bonded layersMar 26, 98Jun 27, 00[H01M]76
6,066,409 Electrochemical fuel cell stack with improved reactant manifolding and sealingJul 16, 98May 23, 00[H01M]73
5,547,776 Electrochemical fuel cell stack with concurrently flowing coolant and oxidant streamsJun 24, 94Aug 20, 96[H01M]51
5,422,411 Trifluorostyrene and substituted trifluorostyrene copolymeric compositions and ion-exchange membranes formed therefromSep 21, 93Jun 06, 95[C08J, C08F]45
6,479,177 Method for improving the cold starting capability of an electrochemical fuel cellSep 27, 99Nov 12, 02[H01M]38
Recent Publications
Publication #
Title
Filing Date
Pub Date
Intl Class
2009/0053,564 METHOD AND SYSTEM FOR OPERATING FUEL CELL STACKS TO REDUCE NON-STEADY STATE CONDITIONS DURING LOAD TRANSIENTSFeb 07, 08Feb 26, 09[H01M]
2009/0004,543 MEMBRANE ELECTRODE ASSEMBLIES FOR FUEL CELLS AND METHODS OF MAKINGJun 27, 07Jan 01, 09[H01M]
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
8,168,025 Methods of making components for electrochemical cellsApr 20, 07May 01, 12[B44C, B32B, B29C, H01M]
7,537,857 Reduced degradation of ion-exchange membranes in electrochemical fuel cellsDec 17, 03May 26, 09[H01M]
7,235,315 Electrochemical fuel cell stack having a plurality of integrated voltage reversal protection diodesDec 16, 03Jun 26, 07[H01M]
7,226,689 Method of making a membrane electrode assembly for electrochemical fuel cellsJun 20, 03Jun 05, 07[H01M]
Top Inventors for This Owner
Inventor Name
Address
# of Patent/Pub
