Granted Patent
Utility
US 5,021,086 · App. 07/548,619
Iron desulfurization additive and method for introduction into hot metal
Inventors:
Leon A. Luydkx, Joseph R. Jackman, James W. Robison, James H. Young, Jr.
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: Jul 5, 1990
Inventors
Leon A. Luydkx
Joseph R. Jackman
James W. Robison
James H. Young, Jr.
Assignee (at issue)
Reactive Metals & Alloys Corporation
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.