Granted Patent
Utility
US 4,863,894 · App. 07/209,572
Process for the manufacture of a catalyst
Inventors:
Godfrey C. Chinchen, James R. Jennings
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Jun 21, 1988
Inventors
Godfrey C. Chinchen
James R. Jennings
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.