Patents by Inventor Kazuo Fukuoka

Kazuo Fukuoka 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 device which removes influences from returning light of three beams and a method of manufacturing the same
    Patent number: 6804276
    Abstract: A semiconductor laser chip has an emission facet for emitting a laser beam. A sub-mount has a first surface and at least one second surface vertical to the first surface. The semiconductor laser chip is provided on the first surface of the sub-mount. The second surface arranged in line with the emission facet of the semiconductor laser chip is inclined at an angle of 3 to 30 degrees. The inclined second surface reflects reflection light of a sub-beam diffracted from a main beam emitted by the semiconductor laser chip.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: October 12, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koichi Gen-ei, Kazuo Fukuoka, Seiji Iida, Makoto Okada
  • Semiconductor laser device which removes influences from returning light of three beams and a method of manufacturing the same
    Publication number: 20020105981
    Abstract: A semiconductor laser chip has an emission facet for emitting a laser beam. A sub-mount has a first surface and at least one second surface vertical to the first surface. The semiconductor laser chip is provided on the first surface of the sub-mount. The second surface arranged in line with the emission facet of the semiconductor laser chip is inclined at an angle of 3 to 30 degrees. The inclined second surface reflects reflection light of a sub-beam diffracted from a main beam emitted by the semiconductor laser chip.
    Type: Application
    Filed: September 14, 2001
    Publication date: August 8, 2002
    Inventors: Koichi Gen-ei, Kazuo Fukuoka, Seiji Iida, Makoto Okada
  • Semiconductor laser, method for fabricating thereof, and method for mounting thereof
    Publication number: 20020064196
    Abstract: Inhibiting an reflective coating of a semiconductor laser from peeling. In addition to a p-InGaAlP ridge-stripe optical waveguide layer 6, a p-InGaAlP ridge-stripe 6a is formed on a p-InGaP etching stopper layer 5. Thereby, non-optical-waveguide swellings 13a are formed on both sides of an optical waveguide swelling 13.
    Type: Application
    Filed: November 15, 2001
    Publication date: May 30, 2002
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hideo Shiozawa, Yoshio Yamamoto, Toshiyuki Nonomura, Kazuo Fukuoka
  • Light emitting device
    Patent number: D454966
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: March 26, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Seiji Iida, Naohiro Shimada, Kazuo Fukuoka, Koichi Genei, Satoshi Komoto
  • Light emitting device
    Patent number: D456534
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: April 30, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Seiji Iida, Naohiro Shimada, Kazuo Fukuoka, Koichi Genei, Satoshi Komoto
  • Light emitting device
    Patent number: D485376
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: January 13, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Seiji Iida, Naohiro Shimada, Kazuo Fukuoka, Koichi Genei, Satoshi Komoto