Granted Patent
Utility
US 4,690,805 · App. 06/838,379
Process for removal of mercaptans from gas streams
Inventors:
Kishan Bhatia, John G. Garcia, Jr.
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Mar 11, 1986
Inventors
Kishan Bhatia
John G. Garcia, Jr.
Assignee (at issue)
NL Industries, Inc.
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.