Granted Patent
Utility
US 4,226,782 · App. 05/903,403
Production of alkylene oxides and catalysts thereof
Inventors:
Percy Hayden, Richard Clayton, Alan F. G. Cope
Patented Case
View Patent ↗
Granted: Oct 7, 1980
Filed: May 8, 1978
Inventors
Percy Hayden
Richard Clayton
Alan F. G. Cope
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.