Granted Patent
Utility
US 4,482,463 · App. 06/422,329
Lubricant compositions containing nitrogen-containing polysulfide load-carrying additives
Inventors:
Henri Dubas, Rudolf Kirchmayr
Patented Case
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Granted: Nov 13, 1984
Filed: Sep 23, 1982
Inventors
Henri Dubas
Rudolf Kirchmayr
Assignee (at issue)
Ciba-Geigy
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.