Granted Patent
Utility
US 6,811,949 · App. 09/919,846
Optical information recording medium and optical recording method
Inventors:
Takashi Ohno, Michikazu Horie
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: Aug 2, 2001
Inventors
Takashi Ohno
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.