Granted Patent
Utility
US 4,466,993 · App. 06/464,306
Preparation of film of web-reinforced photopolymerized hydrophilic interpolymer
Inventors:
Chin C. Hsu, Stanley Raymond Goscewski
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Feb 7, 1983
Inventors
Chin C. Hsu
Stanley Raymond Goscewski
Assignee (at issue)
B. F. Goodrich Company
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.