Granted Patent
Utility
US 4,501,621 · App. 06/513,257
Method for removing a selenium layer from a substrate
Inventors:
Naoto Abe, Hidetoshi Akimoto, Hiroyuki Nomori
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Jul 13, 1983
Inventors
Naoto Abe
Hidetoshi Akimoto
Hiroyuki Nomori
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.