Granted Patent
Utility
US 5,082,914 · App. 07/450,961
Grafted cellulose esters containing a silicon moiety
Inventors:
Phillip Michael Cook, Stephen S. Kelley
Patented Case
View Patent ↗
Granted: Jan 21, 1992
Filed: Dec 15, 1989
Inventors
Phillip Michael Cook
Stephen S. Kelley
Assignee (at issue)
EASTMAN KODAK 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.