Granted Patent
Utility
US 4,501,805 · App. 06/564,250
Galvanic cell having a saturated fluorocarbon plasma-treated sealing gasket
Inventors:
Hirotsugu Yasuda, Johannes A. van Lier
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Dec 22, 1983
Inventors
Hirotsugu Yasuda
Johannes A. van Lier
Assignee (at issue)
Union Carbide 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.