Patents by Inventor Katsunori Tobisawa

Katsunori Tobisawa 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).

  • Patent number: 8968881
    Abstract: A precoated metal sheet produced by simultaneous multilayer coating, and a process for producing the same, is provided with improved color shading prevention and adhesion. In the precoated metal plate, the centerline average roughness Ra in the coating film interface is not less than 0.3 ?m, and the maximum height from the waviness center line in the interface is not more than 50% of the layer thickness. Also provided is (i) a top clear coated metal plate, which comprises a clear layer as an upper layer, has an interfacial centerline average roughness Ra of 0.3 to 0.7 ?m and has excellent weathering resistance; and (ii) a precoated metal plate having excellent processability and corrosion resistance, which contains not less than 30% by mass of a rust preventive pigment.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: March 3, 2015
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Hiroyasu Furukawa, Hiroshi Kanai, Kenji Inada, Katsunori Tobisawa, Shigenori Tanaka, Kohei Ueda, Kengo Yoshida, Yoshihiro Suemune
  • Patent number: 8147950
    Abstract: The invention provides a method of applying a mutilayer coating film, in which two or more layers of coating are applied to a flat plate, such as steel plate; and a product with multilayer coating film obtained by the method. The method includes discharging paint films through multiple slits, simultaneously applying these films to a traveling plate to thereby form a multilayer paint film and carrying out drying or baking thereof, characterized in that the boiling point of the solvent contained in the layer close to the plate is equivalent to or lower than the boiling point of solvent contained in the layer remote from the plate, and that the boiling point of solvent contained in the layer closest to the plate is lower than the boiling point of solvent contained in the layer remotest from the plate.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: April 3, 2012
    Assignee: Nippon Steel Corporation
    Inventors: Magonori Nagase, Katsunori Tobisawa, Yoshihiro Suemune, Hiroyasu Furukawa
  • Publication number: 20100255276
    Abstract: A method of applying a mutilayer coating film, in which two or more layers of coating film are applied to a flat plate, such as steel plate, by baking finish, which method is effective for preventing of foam generation; and a product with multilayer coating film obtained by the method.
    Type: Application
    Filed: June 10, 2010
    Publication date: October 7, 2010
    Applicant: Nippon Steel Corporation
    Inventors: Magonori Nagase, Katsunori Tobisawa, Yoshihiro Suemune, Hiroyasu Furukawa
  • Patent number: 7754289
    Abstract: A method of applying a multilayer coating film, in which two or more layers of coating film are applied to a flat plate, such as steel plate, by baking finish, which method is effective for preventing of foam generation; and a product with multilayer coating film obtained by the method.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: July 13, 2010
    Assignee: Nippon Steel Corporation
    Inventors: Magonori Nagase, Katsunori Tobisawa, Yoshihiro Suemune, Hiroyasu Furukawa
  • Publication number: 20080003446
    Abstract: This invention provides a precoated metal plate that is improved in color shading prevention and adhesion and is produced by simultaneous multilayer coating. In the precoated metal plate, the center line average roughness Ra in the coating film interface is not less than 0.3 ?m, and the maximum height from the waviness center line in the interface is not more than 50% of the layer thickness. There are also provided a top clear coated metal plate, which comprises a clear layer as an upper layer, has an interfacial center line average roughness Ra of 0.3 to 0.
    Type: Application
    Filed: December 5, 2005
    Publication date: January 3, 2008
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Hiroyasu Furukawa, Hiroshi Kanai, Kenji Inada, Katsunori Tobisawa, Shigenori Tanaka, Kohei Ueda, Kengo Yoshida, Yoshihiro Suemune
  • Publication number: 20070275220
    Abstract: A method of applying a multilayer coating film, in which two or more layers of coating film are applied to a flat plate, such as steel plate, by baking finish, which method is effective for preventing of foam generation; and a product with multilayer coating film obtained by the method.
    Type: Application
    Filed: July 12, 2005
    Publication date: November 29, 2007
    Inventors: Magonori Nagase, Katsunori Tobisawa, Yoshihiro Suemune, Hiroyasu Furukawa