Granted Patent
Utility
US 5,489,563 · App. 08/324,140
Platinum alloy catalyst for fuel cells and method of its production
Inventors:
Reinhold Brand, Andreas Freund, Jutta Lang, Thomas Lehmann, Johannes Ohmer, Thomas Tacke, Gerhard Heinz, Robert Schwarz
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Oct 17, 1994
Inventors
Reinhold Brand
Andreas Freund
Jutta Lang
Thomas Lehmann
Johannes Ohmer
Thomas Tacke
Gerhard Heinz
Robert Schwarz
Assignee (at issue)
Degussa AG
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.