Granted Patent
Utility
US 5,167,996 · App. 07/618,605
Information recording media
Inventors:
Masayoshi Kurisu, Suguru Tokita
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Nov 27, 1990
Inventors
Masayoshi Kurisu
Suguru Tokita
Assignee (at issue)
Mitsui Petrochemical Industries, 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.