Granted Patent
Utility
US 6,534,211 · App. 09/699,416
Fuel cell having an air electrode with decreased shrinkage and increased conductivity
Inventors:
Hiroshi Tsukuda, Nagao Hisatome, Yoshiharu Watanabe, Tohru Houjyou
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Oct 31, 2000
Inventors
Hiroshi Tsukuda
Nagao Hisatome
Yoshiharu Watanabe
Tohru Houjyou
Assignee (at issue)
MITSUBISHI ELECTRIC CORPORATION
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.