Granted Patent
Utility
US 4,046,715 · App. 05/655,660
Nonacidic multimetallic dehydrogenation catalyst
Inventor:
Frederick C. Wilhelm
Patented Case
View Patent ↗
Granted: Sep 6, 1977
Filed: Feb 5, 1976
Inventor
Frederick C. Wilhelm
Assignee (at issue)
Universal Oil Products Company
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.