Granted Patent
Utility
US 5,795,669 · App. 08/628,161
Electrode
Inventors:
David P. Wilkinson, Henry H. Voss, Keith B. Prater, Graham Alan Hards, Thomas Robertson Ralph, David Thompsett
Patented Case
View Patent ↗
Granted: Aug 18, 1998
Filed: Apr 5, 1996
Inventors
David P. Wilkinson
Henry H. Voss
Keith B. Prater
Graham Alan Hards
Thomas Robertson Ralph
David Thompsett
Assignees (at issue)
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
BALLARD POWER SYSTEMS INC.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.