Granted Patent
Utility
US 5,220,110 · App. 07/711,053
Catalysts
Inventors:
Frank King, Martin E. Fakley
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Jun 6, 1991
Inventors
Frank King
Martin E. Fakley
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.