Granted Patent
Utility
US 5,221,719 · App. 07/670,551
Blends of poly (ethylene terephthalate) and trans-4,4'-stilbenedicarboxylic acid polyesters
Inventors:
John C. Morris, Winston J. Jackson, Jr.
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Mar 15, 1991
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.