Granted Patent
Utility
US 4,536,471 · App. 06/590,000
Optical information recording medium
Inventors:
Shinichi Nishi, Taxey Satoh, Fumio Shimada, Toshiaki Takahashi
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Mar 15, 1984
Inventors
Shinichi Nishi
Taxey Satoh
Fumio Shimada
Toshiaki Takahashi
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.