Granted Patent
Utility
US 5,284,504 · App. 07/966,223
Powdered desulfurizing reagent and process of use
Inventors:
Bruce J. Barker, Brian Mark Kinsman, Ian A. Cameron
Patented Case
View Patent ↗
Granted: Feb 8, 1994
Filed: Oct 26, 1992
Inventors
Bruce J. Barker
Brian Mark Kinsman
Ian A. Cameron
Assignee (at issue)
The Carbide/Graphite Group, 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.