Granted Patent
Utility
US 4,473,684 · App. 06/485,948
Poly (aryl ether)s
Inventors:
Louis M. Maresca, Herbert Chao
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Apr 18, 1983
Inventors
Louis M. Maresca
Herbert Chao
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.