Granted Patent
Utility
US 5,299,692 · App. 08/012,999
Method and apparatus for reducing carbon content in particulate mixtures
Inventors:
Robert D. Nelson, Jerry L. Heavilon, Robert W. Styron, Bill G. Fletcher
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Feb 3, 1993
Inventors
Robert D. Nelson
Jerry L. Heavilon
Robert W. Styron
Bill G. Fletcher
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.