Patents by Inventor Kenji Kosuge

Kenji Kosuge 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).

  • Publication number: 20020139444
    Abstract: The present invention provides a grain-oriented electrical steel sheet excellent in film characteristics and iron loss characteristics, a process for producing the same and a decarburization annealing facility used for the process.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 3, 2002
    Applicant: Nippon Steel Corporation
    Inventors: Kenji Kosuge, Kishio Mochinaga, Eiichi Nanba, Nobuo Tachibana, Shinya Ishii, Naoki Yagi
  • Patent number: 6395104
    Abstract: A process for producing a grain-oriented electrical steel sheet wherein during the decarburization annealing step, the steel sheet is first rapidly heated in a rapid heating chamber and the PH2O/PH2 ratio in the rapid heating chamber is more than the PH2O/PH2 ratio in the decarburization annealing furnace so as to provide improved oxide film adhesion.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: May 28, 2002
    Assignee: Nippon Steel Corporation
    Inventors: Kenji Kosuge, Kishio Mochinaga, Eiichi Nanba, Nobuo Tachibana, Shinya Ishii, Naoki Yagi
  • Patent number: 5833768
    Abstract: A method of producing a grain-oriented electrical steel sheet with a very low core loss comprises the steps of obtaining a rolled strip of final product thickness using as a starting material molten steel consisting of not more than 0.10 wt % C, 2.5-7.0 wt % Si, ordinary inhibitor components and the balance of iron and unavoidable impurities, heating the strip to a temperature range of not less than 700.degree. C. at a heating rate of not less than 80.degree. C./s and within 0.1 second after the maximum temperature has been reached cooling the strip at a cooling rate of not less than 50.degree. C./s, and subjecting the strip to decarburization annealing and final finish annealing.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: November 10, 1998
    Assignee: Nippon Steel Corporation
    Inventors: Kenji Kosuge, Mikio Itoh, Shinji Ueno, Haruo Hukazawa, Takashi Yoshimura