Granted Patent
Utility
US 4,541,995 · App. 06/670,511
Process for utilizing doubly promoted catalyst with high geometric surface area
Inventors:
Gwan Kim, Carmo J. Pereira, Louis Hegedus, James M. Maselli
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: Nov 13, 1984
Inventors
Gwan Kim
Carmo J. Pereira
Louis Hegedus
James M. Maselli
Assignee (at issue)
W. R. Grace & Co.
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.