Granted Patent
Utility
US 4,900,520 · App. 07/265,167
Process for removal of soluble platinum group metal catalysts from liquid product mixtures
Inventors:
Basil A. Behnam, Rastko Vukov
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Oct 31, 1988
Inventors
Basil A. Behnam
Rastko Vukov
Assignee (at issue)
GAF Chemicals 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.