Granted Patent
Utility
US 5,597,539 · App. 08/436,369
Catalytic process
Inventors:
Martin E. Fakley, Friedrich H. H. Valentin
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: Jun 26, 1995
Inventors
Martin E. Fakley
Friedrich H. H. Valentin
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.