Granted Patent
Utility
US 4,230,603 · App. 06/025,968
Desulfurizing pellet of manganese oxide and aluminum oxide and process for producing said pellet
Inventors:
Robert G. Olsson, Ethem T. Turkdogan
Patented Case
View Patent ↗
Granted: Oct 28, 1980
Filed: Apr 2, 1979
Inventors
Robert G. Olsson
Ethem T. Turkdogan
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.