Granted Patent
Utility
US 4,692,393 · App. 06/791,793
Photoreceptor having a photosensitive layer containing an azo compound
Inventors:
Akira Kinoshita, Kazumasa Watanabe, Hiroshi Yamazaki, Naohiro Hirose
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Oct 28, 1985
Inventors
Akira Kinoshita
Kazumasa Watanabe
Hiroshi Yamazaki
Naohiro Hirose
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.