Granted Patent
Utility
US 6,177,166 · App. 09/192,321
Optical information recording medium
Inventors:
Takashi Ohno, Masao Komatsu, Natsuko Nobukuni
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Nov 16, 1998
Inventors
Takashi Ohno
Masao Komatsu
Natsuko Nobukuni
Assignee (at issue)
MITSUBISHI CHEMICAL CORPORATION
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.