Granted Patent
Utility
US 4,297,196 · App. 06/130,766
Stable low voltage microporous diaphragm for electrolytic cells
Inventors:
Christine A. Lazarz, Edward H. Cook, Jr.
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Mar 17, 1980
Inventors
Christine A. Lazarz
Edward H. Cook, Jr.
Assignee (at issue)
Hooker Chemicals & Plastics 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.