Granted Patent
Utility
US 4,367,273 · App. 06/235,860
Electrophotographic plate comprising a conductive substrate and a photosensitive layer containing an organic photoconductor layer composed of a hydrazone compound
Inventors:
Tetsuo Murayama, Shigenori Otsuka, Tsunemitsu Tajima
Patented Case
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Granted: Jan 4, 1983
Filed: Feb 19, 1981
Inventors
Tetsuo Murayama
Shigenori Otsuka
Tsunemitsu Tajima
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.