Granted Patent
Utility
US 4,877,894 · App. 07/142,703
Hydrocarbon geller and method for making the same
Inventor:
David A. Huddleston
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Jan 11, 1988
Inventor
David A. Huddleston
Assignee (at issue)
Nalco Chemical 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.