Granted Patent
Utility
US 4,938,685 · App. 07/181,031
Catalytic combustion
Inventors:
Kim P. A. Noakes, Peter J. Davidson
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Apr 13, 1988
Inventors
Kim P. A. Noakes
Peter J. Davidson
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.