Granted Patent
Utility
US 6,475,666 · App. 08/801,006
Thermal protection separator for alkali metal batteries
Inventor:
Esther S. Takeuchi
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Feb 19, 1997
Inventor
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.