Granted Patent
Utility
US 6,458,491 · App. 09/669,866
Separator for energy storage cells
Inventors:
Robert A. Wimberly, Michael E. Gilchrist
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: Sep 15, 2000
Inventors
Robert A. Wimberly
Michael E. Gilchrist
Assignee (at issue)
MICROPOROUS PRODUCTS, L.P.
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.