Granted Patent
Utility
US 5,098,878 · App. 07/641,170
Oxychlorination catalyst compositions and process of making same
Inventors:
Robert P. Hirschmann, William O. Beard, Jr., Eric L. Mainz, Earl B. Smith, Barry M. Little
Patented Case
View Patent ↗
Granted: Mar 24, 1992
Filed: Jan 14, 1991
Inventors
Robert P. Hirschmann
William O. Beard, Jr.
Eric L. Mainz
Earl B. Smith
Barry M. Little
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.