Granted Patent
Utility
US 5,169,897 · App. 07/738,068
Binary acetal polymers useful in photosensitive compositions and lithographic printing plates
Inventor:
John E. Walls
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Jul 30, 1991
Inventor
John E. Walls
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.