Patents by Inventor Keiji Ariga

Keiji Ariga 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 producing a composite coated steel sheet
    Patent number: 4086153
    Abstract: A method of providing a composite coated steel sheet is provided herein by dipping a steel sheet into a suspension solution consisting of a water-soluble and/or water-dispersible organic polymer resin, a water-dispersible sol of a metal compound and an infusible powder of a water-insoluble polymer resin, removing the coated steel sheet from the suspension and curing the coated composite by heat treatment. In certain cases, a metal powder, an alloy powder of said metal and a powder of a difficultly water-soluble or water-insoluble compound of said metal may be used in the suspension solution.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: April 25, 1978
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Keiji Ariga, Nobuyuki Tsutsui, Katsumi Kanda
  • Method of producing soft thin steel sheet by continuous annealing
    Patent number: 4023987
    Abstract: A continuous annealing process for producing a soft tin plate and black plate with T - 21/2 or T - 3 tempering properties is attained in a conventional continuous annealing furnace for black plate by the use of a novel steel strip composition.
    Type: Grant
    Filed: December 10, 1975
    Date of Patent: May 17, 1977
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Giichiro Nomura, Takuo Ando, Keiji Ariga, Akira Ikeda, Kinji Saijo, Taizo Sato
  • Method of producing tin coated steel sheet used for seamless steel container
    Patent number: 3982314
    Abstract: Tin coated steel sheet used for seamless steel containers by applying of a coating at least one material selected from the group consisting of nickel, cobalt, copper, nickel oxide, cobalt oxide, copper oxide, tin oxide, copper-tin compound, cobalt-copper compound, cobalt-copper compound, cobalt-nickel compound, nickel-copper compound, cobalt-tin compound, nickel-tin compound and nickel-sulfur compound, onto one or both of the surface of cold rolled and cleaned steel strip or sheet. The coated steel strip or sheet is then coated with tin, and the tin coating may then be flow-melted subsequently.
    Type: Grant
    Filed: July 9, 1975
    Date of Patent: September 28, 1976
    Assignee: Kozo Yoshizaki
    Inventors: Keiji Ariga, Tadashi Nemoto, Kenji Yasunaka