Granted Patent
Utility
US 4,304,709 · App. 06/221,743
Polymer blends with improved hydrolytic stability
Inventor:
Gideon Salee
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Dec 31, 1980
Inventor
Gideon Salee
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.