Granted Patent
Utility
US 6,115,352 · App. 08/873,086
Optical information recording medium capable of rewriting data at low reflectance and deterioration condition
Inventors:
Takashi Ohno, Masaaki Mizuno, Masae Kubo, Kanako Tsuboya, Michikazu Horie
Patented Case
View Patent ↗
Granted: Sep 5, 2000
Filed: Jun 11, 1997
Inventors
Takashi Ohno
Masaaki Mizuno
Masae Kubo
Kanako Tsuboya
Michikazu Horie
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.