Granted Patent
Utility
US 5,609,974 · App. 08/511,470
Rechargeable battery polymeric electrolyte
Inventor:
Luying Sun
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Aug 4, 1995
Inventor
Luying Sun
Assignee (at issue)
Battery Engineering, Inc.
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.