Granted Patent
Utility
US 6,087,032 · App. 09/133,381
Solid polymer electrolyte type fuel cell
Inventors:
Masaru Yoshitake, Naoki Yoshida, Toyoaki Ishizaki, Shinji Terazono
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Aug 13, 1998
Inventors
Masaru Yoshitake
Naoki Yoshida
Toyoaki Ishizaki
Shinji Terazono
Assignee (at issue)
ASAHI GLASS CO., LTD.
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.