Granted Patent
Utility
US 4,735,928 · App. 06/764,618
Hydrocracking catalyst
Inventors:
Donald F. Best, Gary N. Long, Regis J. Pellet, Jule A. Rabo, Edward T. Wolynic
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Aug 12, 1985
Inventors
Donald F. Best
Gary N. Long
Regis J. Pellet
Jule A. Rabo
Edward T. Wolynic
Assignee (at issue)
Union Carbide 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.