Granted Patent
Utility
US 4,585,621 · App. 06/626,500
Vapor-deposited film of selenium or selenium alloy for electrophotography
Inventors:
Osamu Oda, Arata Onozuka, Akio Koyama
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Jun 29, 1984
Inventors
Osamu Oda
Arata Onozuka
Akio Koyama
Assignee (at issue)
Nihon Kogyo 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.