Granted Patent
Utility
US 4,914,179 · App. 07/288,901
Copolyesters from 4,4'-biphenyldicarboxylic acid, 1,4-cyclohexanedimethanol and ethylene glycol
Inventors:
John C. Morris, Winston J. Jackson, Jr.
Patented Case
View Patent ↗
Granted: Apr 3, 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.