Granted Patent
Utility
US 4,421,774 · App. 06/374,458
Gaseous antimicrobial treatments of storage grain with sulfur dioxide and ammonia
Inventors:
Frédérick Vidal, Anantharaman Jayaraman
Patented Case
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Granted: Dec 20, 1983
Filed: May 3, 1982
Inventors
Frédérick Vidal
Anantharaman Jayaraman
Assignee (at issue)
Pennwalt 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.