Granted Patent
Utility
US 5,301,183 · App. 07/999,534
Information recording discs
Inventors:
Takeshi Minoda, Masayoshi Kurisu
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Dec 31, 1992
Inventors
Takeshi Minoda
Masayoshi Kurisu
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.