Granted Patent
Utility
US 6,495,290 · App. 09/619,166
Proton conductor, production method thereof, and electrochemical device using the same
Inventors:
Koichiro Hinokuma, Björn Pietzak, Constance Gertrud Rost, Masafumi Ata
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Jul 19, 2000
Inventors
Koichiro Hinokuma
Björn Pietzak
Constance Gertrud Rost
Masafumi Ata
Assignee (at issue)
SONY GROUP 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.