Patents by Inventor Kohji Yanaba

Kohji Yanaba 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).

  • Method of production and production facility of high strength cold rolled steel sheet excellent in chemical convertibility
    Patent number: 8834651
    Abstract: A method using a continuous annealing furnace where a cooling method of a cooling zone including part or all of the temperature range of the steel sheet of 600 to 250° C. following the heating for recrystallization is one or more of gas cooling, effusion cooling, and cooling pipe cooling, or a joint cold rolled steel sheet/hot dip galvanized steel sheet facility having such a continuous annealing furnace, to continuously anneal cold rolled steel sheet to produce high strength cold rolled steel sheet, characterized by exposing the steel sheet surface to an iron-oxidizing atmosphere in the steel sheet temperature range to make the surface oxidize, pickling the sheet at the outlet side of the annealing furnace, then iron- or Ni-plating the sheet to 1 to 50 mg/m2.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: September 16, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Kenichiro Matsumura, Kohji Yanaba, Yuuki Yasuda
  • METHOD OF PRODUCTION AND PRODUCTION FACILITY OF HIGH STRENGTH COLD ROLLED STEEL SHEET EXCELLENT IN CHEMICAL CONVERTIBILITY
    Publication number: 20090308498
    Abstract: A method using a continuous annealing furnace where a cooling method of a cooling zone including part or all of the temperature range of the steel sheet of 600 to 250° C. following the heating for recrystallization is one or more of gas cooling, effusion cooling, and cooling pipe cooling, or a joint cold rolled steel sheet/hot dip galvanized steel sheet facility having such a continuous annealing furnace, to continuously anneal cold rolled steel sheet to produce high strength cold rolled steel sheet, characterized by exposing the steel sheet surface to an iron-oxidizing atmosphere in the steel sheet temperature range to make the surface oxidize, pickling the sheet at the outlet side of the annealing furnace, then iron- or Ni-plating the sheet to 1 to 50 mg/m2.
    Type: Application
    Filed: January 9, 2008
    Publication date: December 17, 2009
    Inventors: Kenichiro Matsumura, Kohji Yanaba, Yuuki Yasuda