Granted Patent
Utility
US 5,647,383 · App. 08/559,393
Photodegradable cellulose ester tow
Inventors:
Terry A. Brodof, John B. Hopkins, Jr.
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Nov 15, 1995
Inventors
Terry A. Brodof
John B. Hopkins, Jr.
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.