Granted Patent
Utility
US 5,000,835 · App. 07/416,051
Method of reducing H.sub.2 S in asphalt
Inventors:
Stephen Taylor, John P. Gorman
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Oct 2, 1989
Inventors
Stephen Taylor
John P. Gorman
Assignee (at issue)
Exxon Chemical Patents, 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.