Granted Patent
Utility
US 5,200,947 · App. 07/811,114
Optical recording medium, optical recording method, and optical recording device used in method
Inventors:
Toshimi Satake, Tomoaki Nagai, Hiroshi Fukui, Akio Sekine, Miyuki Yokoyama
Patented Case
View Patent ↗
Granted: Apr 6, 1993
Filed: Dec 20, 1991
Inventors
Toshimi Satake
Tomoaki Nagai
Hiroshi Fukui
Akio Sekine
Miyuki Yokoyama
Assignee (at issue)
Jujo Paper 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.