Granted Patent
Utility
US 4,276,276 · App. 06/135,025
Process for nitrite production
Inventors:
James P. Van Hook, Clair E. Hildebrand, Chong H. Chan
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Mar 28, 1980
Inventors
James P. Van Hook
Clair E. Hildebrand
Chong H. Chan
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.