Granted Patent
Utility
US 4,488,903 · App. 06/589,469
Rapid decarburization steelmaking process
Inventor:
Stewart K. Mehlman
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Mar 14, 1984
Inventor
Stewart K. Mehlman
Assignee (at issue)
Union Carbide 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.