Granted Patent
Utility
US 4,294,813 · App. 06/189,993
Process for forming calcium nitrite
Inventors:
James M. Gaidis, Arnold M. Rosenberg
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: Sep 23, 1980
Inventors
James M. Gaidis
Arnold M. Rosenberg
Assignee (at issue)
W. R. Grace & Co.
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.