Granted Patent
Utility
US 4,264,133 · App. 05/908,912
Anti-reflective coating for a transparent substrate
Inventor:
Kunio Sakurai
Patented Case
View Patent ↗
Granted: Apr 28, 1981
Filed: May 24, 1978
Inventor
Kunio Sakurai
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.