Patents by Inventor Masakatsu Yamamoto

Masakatsu Yamamoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Semiconductor laser diode and its fabrication process
    Patent number: 7746910
    Abstract: A semiconductor laser diode device with small driving current and no distortion in the projected image.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: June 29, 2010
    Assignee: Opnext Japan, Inc.
    Inventors: Satoshi Kawanaka, Atsushi Nakamura, Masato Hagimoto, Hideki Hara, Masakatsu Yamamoto
  • SEMICONDUCTOR LASER DIODE AND ITS FABRICATION PROCESS
    Publication number: 20080181276
    Abstract: A semiconductor laser diode device with small driving current and no distortion in the projected image.
    Type: Application
    Filed: January 31, 2008
    Publication date: July 31, 2008
    Inventors: Satoshi Kawanaka, Atsushi Nakamura, Masato Hagimoto, Hideki Hara, Masakatsu Yamamoto
  • Coating composition for ink-jet recording medium and ink-jet recording medium
    Patent number: 7144944
    Abstract: The present invention relates to a coating composition for a recording medium useful in ink jet printing of photographic images to provide a high gloss finish. The coating composition for an ink jet recording medium comprises colloidal silica and a synthetic resin emulsion having two or more glass transition points. The synthetic resin emulsion is obtained by emulsion-polymerizing, simultaneously or separately, (A) a radical-polymerizable unsaturated monomer having a silyl group and (B) another radical-polymerizable unsaturated monomer which is copolymerizable unsaturated monomer which is copolymerizable with (A), in the presence of a radical polymerizable surfactant.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: December 5, 2006
    Assignee: Gelanese International Corporation
    Inventors: Naokazu Murase, Masakatsu Yamamoto
  • Coating composition for ink-jet recording medium and ink-jet recording medium
    Publication number: 20040077781
    Abstract: The present invention relates to a coating composition for a recording medium useful in ink jet printing of photographic images to provide a high gloss finish. The coating composition for an ink jet recording medium comprises colloidal silica and a synthetic resin emulsion having two or more glass transition points. The synthetic resin emulsion is obtained by emulsion-polymerizing, simultaneously or separately, (A) a radical-polymerizable unsaturated monomer having a silyl group and (B) another radical-polymerizable unsaturated monomer which is copolymerizable unsaturated monomer which is copolymerizable with (A), in the presence of a radical polymerizable surfactant.
    Type: Application
    Filed: September 16, 2003
    Publication date: April 22, 2004
    Inventors: Naokazu Murase, Masakatsu Yamamoto