Granted Patent
Utility
US 4,098,684 · App. 05/745,631
Purification of liquid n-paraffins containing carbonyl sulfide and other sulfur compounds
Inventor:
Robert A. Innes
Patented Case
View Patent ↗
Granted: Jul 4, 1978
Filed: Nov 29, 1976
Inventor
Robert A. Innes
Assignee (at issue)
Gulf Research & Development 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.