Granted Patent
Utility
US 4,536,237 · App. 06/572,110
Aluminothermic reduction reaction mixture
Inventor:
Robert H. Kachik
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Jan 20, 1984
Inventor
Robert H. Kachik
Assignee (at issue)
United States Steel 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.