Granted Patent
Utility
US 4,049,572 · App. 05/660,899
Catalyst and method of manufacture and use thereof
Inventor:
Walter M. Douglas
Patented Case
View Patent ↗
Granted: Sep 20, 1977
Filed: Feb 24, 1976
Inventor
Walter M. Douglas
Assignee (at issue)
UOP LLC
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.