Granted Patent
Utility
US 5,113,027 · App. 07/533,513
Oxychlorination process using a catalyst which comprises copper chloride supported on rare-earth modified alumina
Inventors:
Eric L. Mainz, William Q. Beard, Jr., Robert P. Hirschmann, Barry M. Little, Earl B. Smith
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Jun 5, 1990
Inventors
Eric L. Mainz
William Q. Beard, Jr.
Robert P. Hirschmann
Barry M. Little
Earl B. Smith
Assignee (at issue)
Vulcan Materials 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.