Granted Patent
Utility
US 4,902,827 · App. 07/189,933
Process for the preparation of adipic acid
Inventors:
Guy R. Steinmetz, Norma L. Lafferty, Charles Sumner
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: May 3, 1988
Inventors
Guy R. Steinmetz
Norma L. Lafferty
Charles Sumner
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.