Granted Patent
Utility
US 4,285,923 · App. 05/960,820
Manufacture of calcium nitrite solutions with low nitrate content
Inventors:
Samuel L. Bean, Philip F. Seeling, Robert Joel Hoffman, William W. Low
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Nov 15, 1978
Inventors
Samuel L. Bean
Philip F. Seeling
Robert Joel Hoffman
William W. Low
Assignee (at issue)
Allied Chemical 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.