Granted Patent
Utility
US 5,175,276 · App. 07/627,082
Process for the production of cellulose ester fibrets
Inventors:
Samuel S. McNair, Jr., David M. Gault
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Dec 14, 1990
Inventors
Samuel S. McNair, Jr.
David M. Gault
Assignee (at issue)
Hoechst Celanese 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.