Patents by Inventor Hiromichi Hongo

Hiromichi Hongo 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).

  • Postweld heat treatment process of carbon steel and low alloy steel
    Patent number: 6676777
    Abstract: The creep strength of a welded joint portion is improved, and damage of the welded joint portion based on the generation or development of cracks is suppressed. A postweld heat treatment process, wherein a welded joint made of carbon steel and low alloy steel is held within austenite single-phase temperature range for a given time and subsequently the joint is cooled by air-cooling or by slow cooling at a cooling rate lower than that of the air-cooling.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: January 13, 2004
    Assignee: National Institute for Materials Science
    Inventors: Kazuhiro Kimura, Masayoshi Yamazaki, Hiromichi Hongo, Junichi Kinugawa, Takashi Watanabe
  • Postweld heat treatment process of carbon steel and low alloy steel
    Publication number: 20020170634
    Abstract: The creep strength of a welded joint portion is improved, and damage of the welded joint portion based on the generation or development of cracks is suppressed. A postweld heat treatment process, wherein a welded joint made of carbon steel and low alloy steel is held within austenite single-phase temperature range for a given time and subsequently the joint is cooled by air-cooling or by slow cooling at a cooling rate lower than that of the air-cooling.
    Type: Application
    Filed: March 1, 2002
    Publication date: November 21, 2002
    Inventors: Kazuhiro Kimura, Masayoshi Yamazaki, Hiromichi Hongo, Junichi Kinugawa, Takashi Watanabe