Patents by Inventor Toshizo Kobayashi

Toshizo Kobayashi 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).

  • Electrode, manufacturing method thereof, and metal vapor discharge lamp
    Patent number: 7057347
    Abstract: A first electrode part in a rod shape is placed on an upper side, and a second electrode part in a rod shape having a higher melting point than that of the first electrode part is placed on a lower side, so that ends of the first and second electrode parts are brought into contact. Contact ends or vicinities thereof are irradiated with a laser beam, so that the electrode parts are welded. Here, a region irradiated with the laser beam is in a long narrow shape having a minor axis directed in a vertical direction and a major axis directed in a horizontal direction. This makes it possible to manufacture an electrode with a consistent high quality with a high yield.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: June 6, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tatsuya Kawamura, Toshizo Kobayashi, Hiroshi Enami, Yoshiharu Nishiura, Takaharu Yanata
  • Electrode, manufacturing method thereof, and metal vapor discharge lamp
    Patent number: 7018260
    Abstract: A first electrode part in a rod shape is placed on an upper side, and a second electrode part in a rod shape having a higher melting point than that of the first electrode part is placed on a lower side, so that ends of the first and second electrode parts are brought into contact. Contact ends or vicinities thereof are irradiated with a laser beam, so that the electrode parts are welded. Here, a region irradiated with the laser beam is in a long narrow shape having a minor axis directed in a vertical direction and a major axis directed in a horizontal direction. This makes it possible to manufacture an electrode with a consistent high quality with a high yield.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: March 28, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tatsuya Kawamura, Toshizo Kobayashi, Hiroshi Enami, Yoshiharu Nishiura, Takaharu Yanata
  • Electrode, manufacturing method thereof, and metal vapor discharge lamp
    Publication number: 20050029656
    Abstract: A first electrode part in a rod shape is placed on an upper side, and a second electrode part in a rod shape having a higher melting point than that of the first electrode part is placed on a lower side, so that ends of the first and second electrode parts are brought into contact. Contact ends or vicinities thereof are irradiated with a laser beam, so that the electrode parts are welded. Here, a region irradiated with the laser beam is in a long narrow shape having a minor axis directed in a vertical direction and a major axis directed in a horizontal direction. This makes it possible to manufacture an electrode with a consistent high quality with a high yield.
    Type: Application
    Filed: September 2, 2004
    Publication date: February 10, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Tatsuya Kawamura, Toshizo Kobayashi, Hiroshi Enami, Yoshiharu Nishiura, Takaharu Yanata
  • Electrode, manufacturing method thereof, and metal vapor discharge lamp
    Publication number: 20050029950
    Abstract: A first electrode part in a rod shape is placed on an upper side, and a second electrode part in a rod shape having a higher melting point than that of the first electrode part is placed on a lower side, so that ends of the first and second electrode parts are brought into contact. Contact ends or vicinities thereof are irradiated with a laser beam, so that the electrode parts are welded. Here, a region irradiated with the laser beam is in a long narrow shape having a minor axis directed in a vertical direction and a major axis directed in a horizontal direction. This makes it possible to manufacture an electrode with a consistent high quality with a high yield.
    Type: Application
    Filed: September 2, 2004
    Publication date: February 10, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Tatsuya Kawamura, Toshizo Kobayashi, Hiroshi Enami, Yoshiharu Nishiura, Takaharu Yanata
  • Electrode, manufacturing method thereof, and metal vapor discharge lamp
    Patent number: 6805603
    Abstract: A first electrode part in a rod shape is placed on an upper side, and a second electrode part in a rod shape having a higher melting point than that of the first electrode part is placed on a lower side, so that ends of the first and second electrode parts are brought into contact. Contact ends or vicinities thereof are irradiated with a laser beam, so that the electrode parts are welded. Here, a region irradiated with the laser beam is in a long narrow shape having a minor axis directed in a vertical direction and a major axis directed in a horizontal direction. This makes it possible to manufacture an electrode with a consistent high quality with a high yield.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: October 19, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tatsuya Kawamura, Toshizo Kobayashi, Hiroshi Enami, Yoshiharu Nishiura, Takaharu Yanata
  • Electrode, manufacturing method thereof, and metal vapor discharge lamp
    Publication number: 20030030373
    Abstract: A first electrode part in a rod shape is placed on an upper side, and a second electrode part in a rod shape having a higher melting point than that of the first electrode part is placed on a lower side, so that ends of the first and second electrode parts are brought into contact. Contact ends or vicinities thereof are irradiated with a laser beam, so that the electrode parts are welded. Here, a region irradiated with the laser beam is in a long narrow shape having a minor axis directed in a vertical direction and a major axis directed in a horizontal direction. This makes it possible to manufacture an electrode with a consistent high quality with a high yield.
    Type: Application
    Filed: August 5, 2002
    Publication date: February 13, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tatsuya Kawamura, Toshizo Kobayashi, Hiroshi Enami, Yoshiharu Nishiura, Takaharu Yanata