Granted Patent
Utility
US 5,902,696 · App. 08/867,169
Separator for nonaqueous electrochemical cells
Inventors:
Sally Ann Smesko, Esther S. Takeuchi
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Jun 2, 1997
Inventors
Sally Ann Smesko
Esther S. Takeuchi
Assignee (at issue)
Wilson Greatbatch, 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.