Granted Patent
Utility
US 4,576,886 · App. 06/700,531
Azo photoreceptor
Inventors:
Naohiro Hirose, Osamu Sasaki, Yoshio Takizawa
Patented Case
View Patent ↗
Granted: Mar 18, 1986
Filed: Feb 11, 1985
Inventors
Naohiro Hirose
Osamu Sasaki
Yoshio Takizawa
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.