Granted Patent
Utility
US 5,244,641 · App. 07/874,908
Absorption of hydrogen sulfide and absorbent composition therefor
Inventor:
Gyanesh P. Khare
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Apr 28, 1992
Inventor
Gyanesh P. Khare
Assignee (at issue)
Phillips Petroleum Company
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.