Granted Patent
Utility
US 4,448,868 · App. 06/463,974
Electrophotographic photoreceptor with hydrazone derivative
Inventors:
Shinichi Suzuki, Kiyoshi Sawada, Akira Kinoshita, Osamu Sasaki, Satoshi Goto
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Feb 4, 1983
Inventors
Shinichi Suzuki
Kiyoshi Sawada
Akira Kinoshita
Osamu Sasaki
Satoshi Goto
Assignee (at issue)
Konishiroku Photo Industry Co., 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.