Granted Patent
Utility
US 5,928,985 · App. 08/702,581
Copper catalysts
Inventor:
Brian Williams
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Sep 3, 1996
Inventor
Brian Williams
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.