Granted Patent
Utility
US 4,587,350 · App. 06/744,925
Process for the production of trimellitic anhydride
Inventors:
Peter H. Kilner, Joseph P. Egan, Jr., Stephen G. Ceisel, Wayne P. Schammel
Patented Case
View Patent ↗
Granted: May 6, 1986
Filed: Jun 14, 1985
Inventors
Peter H. Kilner
Joseph P. Egan, Jr.
Stephen G. Ceisel
Wayne P. Schammel
Assignee (at issue)
Amoco Corporation
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.