Granted Patent
Utility
US 4,554,367 · App. 06/535,528
Phosphonium organohalogenostannates-IV
Inventors:
Wolfgang Wehner, Reinhardt Grade
Patented Case
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Granted: Nov 19, 1985
Filed: Sep 26, 1983
Inventors
Wolfgang Wehner
Reinhardt Grade
Assignee (at issue)
Ciga-Geigy 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.