Granted Patent
Utility
US 4,816,601 · App. 07/072,527
Process for the manufacture of trimellitic acid
Inventors:
James D. Lowry, Jr., Neal R. Nowicki, Walter Partenheimer
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Jul 13, 1987
Inventors
James D. Lowry, Jr.
Neal R. Nowicki
Walter Partenheimer
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.