Granted Patent
Utility
US 5,240,791 · App. 07/863,867
Solid polymer electrolyte
Inventors:
Shyuiti Izuti, Tomohiko Noda, Hiroshi Imachi
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: Apr 6, 1992
Inventors
Shyuiti Izuti
Tomohiko Noda
Hiroshi Imachi
Assignee (at issue)
Yuasa Battery 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.