Granted Patent
Utility
US 4,252,878 · App. 06/126,598
Processes of wetting hydrophobic fluoropolymer separators
Inventors:
Christine A. Lazarz, Ursula I. Keller, Edward H. Cook, Jr.
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Mar 3, 1980
Inventors
Christine A. Lazarz
Ursula I. Keller
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.