Patents by Inventor Toshio Irie

Toshio Irie 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).

  • Cold rolled non-oriented electrical steel sheet
    Patent number: 4293336
    Abstract: A cold rolled non-oriented electrical steel sheet having a low iron loss is disclosed. The steel sheet consists of not more than 0.02% of C, 0.1-3.5% of Si, not more than 1.0% of Al, 0.1-1.0% of Mn, 0.03-0.40% of Sn and the remainder being substantially Fe.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: October 6, 1981
    Assignee: Kawasaki Steel Corporation
    Inventors: Ko Matsumura, Hiroto Nakamura, Toshio Irie
  • Method of producing non-oriented silicon steel sheets having an excellent electromagnetic property
    Patent number: 4204890
    Abstract: Non-oriented silicon steel sheets having an excellent electromagnetic property is obtained by annealing a hot rolled steel sheet containing not moe than 0.02% of C, 0.5-3.5% of Si, 0.1-1.0% of Al, 0.1-1.0% of Mn, not more than 0.007% of S and 0.005-0.30% of Sb at a temperature of 700.degree.-950.degree. C., cold rolling the annealed sheet, and annealing the cold rolled sheet at a temperature of 750.degree.-1,000.degree. C.
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: May 27, 1980
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshio Irie, Ko Matsumura, Hiroto Nakamura, Hiroshi Shimanaka, Toshio Suzuki
  • Method for producing coated electrical steel sheets having excellent punchability, weldability, electrical insulation and heat resistance
    Patent number: 4032675
    Abstract: Coated electrical steel sheets having excellent punchability, weldability and insulation resistance are produced by applying an electrical steel sheet with a treating dispersion obtained by compounding the particle separating resin emulsion and the compatible resin to an aqueous solution containing chromic acid in the particularly defined amount and baking the thus applied steel sheets. To the treating dispersion may be added saccharides or polyhydric alcohols as a reducing agent or boric acid or phosphoric acid.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: June 28, 1977
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshio Irie, Toshikuni Tanda, Tomoyuki Ichi, Toshio Sadayori
  • Method for forming an insulating glass film on surfaces of an oriented silicon steel sheet
    Patent number: 3932237
    Abstract: A highly adhesive and uniform insulating glass film can be formed on surfaces of an oriented silicon steel sheet by pickling a finally cold rolled silicon steel strip just before a decarburizing annealing, and successively subjecting the pickled steel strip to the decarburizing annealing, an application of an annealing separator and a final annealing at a high temperature.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: January 13, 1976
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshio Irie, Yasuo Yokoyama, Yoshihiko Kameishi, Katsuo Yamaguchi, Kazuo Hamachi
  • Method for forming an insulating glass film on a grain-oriented silicon steel sheet having a high magnetic induction
    Patent number: 3930906
    Abstract: An insulating glass film having an excellent uniformity and a high adhesion to a grain-oriented silicon steel sheet having a high magnetic induction is formed by annealing a coil of a cold rolled silicon steel sheet having a final gauge in an annealing furnace under a non-oxidizing and non-reducing neutral inert gas, such as nitrogen or argon at a constant temperature keeping stage of 800.degree.-920.degree.C and then under dry hydrogen at a temperature of 1,000.degree.-1,200.degree.C in the final annealing stage.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: January 6, 1976
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshio Irie, Yasuo Yokoyama, Toshitomo Sugiyama, Hiroshi Shimanaka, Shigeru Kobayashi