Granted Patent
Utility
US 5,798,412 · App. 08/895,286
Alkylene glycol production using carbon catalysts
Inventors:
John R. Sanderson, Edward T. Marquis
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Jul 16, 1997
Inventors
John R. Sanderson
Edward T. Marquis
Assignee (at issue)
HUNTSMAN PETROCHEMICAL LLC
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.