Granted Patent
Utility
US 5,650,121 · App. 08/470,655
Coated expendable refractory lining having improved resistance to erosive and corrosive materials
Inventors:
Julie A. Dody, Charles R. Rumpeltin, Jr.
Patented Case
View Patent ↗
Granted: Jul 22, 1997
Filed: Jun 6, 1995
Inventors
Julie A. Dody
Charles R. Rumpeltin, Jr.
Assignee (at issue)
Minerals Technologies Inc.
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.