Granted Patent
Utility
US 4,618,555 · App. 06/686,991
Electrophotographic photoreceptor comprising azo compounds
Inventors:
Tetsumi Suzuki, Tetsuo Murayama, Hitoshi Ono, Shinji Aramaki, Michiyo Yokoyama
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: Dec 27, 1984
Inventors
Tetsumi Suzuki
Tetsuo Murayama
Hitoshi Ono
Shinji Aramaki
Michiyo Yokoyama
Assignee (at issue)
Mitsubishi Chemical Inds. 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.