Patents by Inventor Takashige Yamada

Takashige Yamada 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).

  • Manufacturing method of high-pressure discharge lamp and sealed part structure for high-pressure discharge lamp
    Patent number: 10056220
    Abstract: A method of manufacturing a high-pressure discharge lamp, comprising the steps of: inserting a mount into an interior of a glass tube having an outer diameter smaller than an inner diameter of an end part of a sealed container; radially constricting the glass tube at a first position located away from a metallic foil toward a tip of an electrode; sealing the mount by a region of the glass tube that ranges from the first position to at least the other end of the metallic foil; protruding the electrode out of the glass tube located away from the first position toward the tip of the electrode to form a glass-tube air-tightly sealed mount; inserting the sealed mount into the end part of the sealed container; and radially constricting the end part of the sealed container to sealing the glass tube of the sealed mount by the end part.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: August 21, 2018
    Assignee: PHOENIX ELECTRIC CO., LTD.
    Inventors: Atsuji Nakagawa, Hiroshi Takahashi, Takashige Yamada
  • MANUFACTURING METHOD OF HIGH-PRESSURE DISCHARGE LAMP AND SEALED PART STRUCTURE FOR HIGH-PRESSURE DISCHARGE LAMP
    Publication number: 20180019090
    Abstract: A method of manufacturing a high-pressure discharge lamp, comprising the steps of: inserting a mount into an interior of a glass tube having an outer diameter smaller than an inner diameter of an end part of a sealed container; radially constricting the glass tube at a first position located away from a metallic foil toward a tip of an electrode; sealing the mount by a region of the glass tube that ranges from the first position to at least the other end of the metallic foil; protruding the electrode out of the glass tube located away from the first position toward the tip of the electrode to form a glass-tube air-tightly sealed mount; inserting the sealed mount into the end part of the sealed container; and radially constricting the end part of the sealed container to sealing the glass tube of the sealed mount by the end part.
    Type: Application
    Filed: September 26, 2017
    Publication date: January 18, 2018
    Inventors: Atsuji NAKAGAWA, Hiroshi TAKAHASHI, Takashige YAMADA
  • Manufacturing method of high-pressure discharge lamp and sealed part structure for high-pressure discharge lamp
    Patent number: 9812280
    Abstract: A method of manufacturing a high-pressure discharge lamp, comprising the steps of: inserting a mount into an interior of a glass tube having an outer diameter smaller than an inner diameter of an end part of a sealed container; radially constricting the glass tube at a first position located away from a metallic foil toward a tip of an electrode; sealing the mount by a region of the glass tube that ranges from the first position to at least the other end of the metallic foil; protruding the electrode out of the glass tube located away from the first position toward the tip of the electrode to form a glass-tube air-tightly sealed mount; inserting the sealed mount into the end part of the sealed container; and radially constricting the end part of the sealed container to sealing the glass tube of the sealed mount by the end part.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 7, 2017
    Assignee: PHOENIX ELECTRIC CO., LTD.
    Inventors: Atsuji Nakagawa, Hiroshi Takahashi, Takashige Yamada
  • MANUFACTURING METHOD OF HIGH-PRESSURE DISCHARGE LAMP AND SEALED PART STRUCTURE FOR HIGH-PRESSURE DISCHARGE LAMP
    Publication number: 20160013008
    Abstract: A method of manufacturing a high-pressure discharge lamp, comprising the steps of: inserting a mount into an interior of a glass tube having an outer diameter smaller than an inner diameter of an end part of a sealed container; radially constricting the glass tube at a first position located away from a metallic foil toward a tip of an electrode; sealing the mount by a region of the glass tube that ranges from the first position to at least the other end of the metallic foil; protruding the electrode out of the glass tube located away from the first position toward the tip of the electrode to form a glass-tube air-tightly sealed mount; inserting the sealed mount into the end part of the sealed container; and radially constricting the end part of the sealed container to sealing the glass tube of the sealed mount by the end part.
    Type: Application
    Filed: June 23, 2015
    Publication date: January 14, 2016
    Inventors: Atsuji NAKAGAWA, Hiroshi Takahashi, Takashige Yamada