Granted Patent
Utility
US 6,004,646 · App. 09/048,042
Optical information recording medium
Inventors:
Takashi Ohno, Masao Komatsu, Masae Kubo, Masaaki Mizuno, Natsuko Nobukuni, Michikazu Horie, Haruo Kunitomo
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Mar 26, 1998
Inventors
Takashi Ohno
Masao Komatsu
Masae Kubo
Masaaki Mizuno
Natsuko Nobukuni
Michikazu Horie
Haruo Kunitomo
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.