Granted Patent
Utility
US 4,407,919 · App. 06/390,842
Electrophotographic plate
Inventors:
Tetsuo Murayama, Shigenori Otsuka, Tsunemitsu Tajima, Yukihiro Sato
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Jun 22, 1982
Inventors
Tetsuo Murayama
Shigenori Otsuka
Tsunemitsu Tajima
Yukihiro Sato
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.