Granted Patent
Utility
US 4,256,916 · App. 06/066,759
Oxidation of polyethylene glycols to dicarboxylic acids
Inventors:
Don L. Morris, William J. Gammans, Jerry D. Holmes
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Aug 15, 1979
Inventors
Don L. Morris
William J. Gammans
Jerry D. Holmes
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.