Granted Patent
Utility
US 4,698,451 · App. 06/875,085
Dirhenium metathesis catalysts
Inventor:
Steven P. Diefenbach
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: Jun 17, 1986
Inventor
Steven P. Diefenbach
Assignee (at issue)
Ethyl Corporation
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.