Granted Patent
Utility
US 4,623,675 · App. 06/760,801
Aromatic poly(ether-carbonate) containing ethyleneoxy and arylene oxy moieties
Inventors:
William R. Darnell, Winston J. Jackson, Jr.
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Jul 31, 1985
Inventors
William R. Darnell
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.