Granted Patent
Utility
US 5,254,714 · App. 07/774,797
Hydrogenation of aromatic-substituted olefins using organoruthenium catalyst
Inventor:
Merrikh Ramezanian
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Oct 10, 1991
Inventor
Merrikh Ramezanian
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.