Granted Patent
Utility
US 4,973,532 · App. 07/333,662
Battery separator with integral thermal fuse
Inventors:
Henry T. Taskier, Steven M. Mullins, Ellen A. Langford, Robert J. Fleming
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: Apr 5, 1989
Inventors
Henry T. Taskier
Steven M. Mullins
Ellen A. Langford
Robert J. Fleming
Assignee (at issue)
Hoechst Celanese Corporation
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.