Granted Patent
Utility
US 5,484,480 · App. 08/138,762
Use of alumina clay with cement fly ash mixtures
Inventor:
Robert W. Styron
Patented Case
View Patent ↗
Granted: Jan 16, 1996
Filed: Oct 19, 1993
Inventor
Robert W. Styron
Assignee (at issue)
JTM Industries, 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.