Granted Patent
Utility
US 4,906,709 · App. 07/288,895
Blends of polycarbonates with polyesters from trans-4,4'-stilbenedicarboxylic acid and 1,6-hexanediol
Inventors:
John C. Morris, Winston J. Jackson, Jr.
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Dec 23, 1988
Inventors
John C. Morris
Winston J. Jackson, Jr.
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.