Granted Patent
Utility
US 4,210,442 · App. 06/010,316
Argon in the basic oxygen process to control slopping
Inventors:
Jennings B. Lewis, III, Peter Kelly
Patented Case
View Patent ↗
Granted: Jul 1, 1980
Filed: Feb 7, 1979
Inventors
Jennings B. Lewis, III
Peter Kelly
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.