Granted Patent
Utility
US 6,340,467 · App. 08/803,142
Solid and semi-solid hydrocarbon gels and uses thereof
Inventor:
David Scott Morrison
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Feb 19, 1997
Inventor
David Scott Morrison
Assignee (at issue)
Pennzoil Products 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.