Granted Patent
Utility
US 4,590,265 · App. 06/724,747
Carboxylated cellulose ester and manufacture thereof
Inventors:
Richard T. Bogan, Chung-Ming Kuo
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Apr 18, 1985
Inventors
Richard T. Bogan
Chung-Ming Kuo
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.