Patents by Inventor Kikuo Toyose

Kikuo Toyose 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: 5795662
    Abstract: A zincate-treated article of an Al-Mg-Si base alloy has a zincate coating film having a Zn crystal grain size of 1.0 .mu.m or smaller on an Al-Mg-Si base alloy body having a Cu content of 0.1 to 1.5 weight %. The Zn crystal grain size is preferably equal to or smaller than 0.95 .mu.m. This zincate-treated article can be manufactured by treating an Al-Mg-Si base alloy body having a Cu content of 0.1 to 1.5 weight % in a zincating treatment bath containing 100 to 300 g/l of sodium hydroxide, 5 to 20 g/l of zinc oxide, 2 to 10 g/l of iron chloride, 5 to 20 g/l of Rochelle salt and 50 to 200 ml/l of water glass at a temperature of 20.degree. to 80.degree. C. for 5 to 60 seconds. By adjusting the Zn crystal grain size in the zincating treatment in this manner, a zincate-treated article of an Al-Mg-Si base alloy having an excellent adhesion can be acquired even in a single stage zincating treatment.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: August 18, 1998
    Assignee: Kobe Alcoa Transportation Products Ltd.
    Inventors: Shunichiro Maezono, Makoto Tawara, Kikuo Toyose
  • Patent number: 5429881
    Abstract: Surface-treated Al or Al alloy materials which excel in adhesive property, formability, weldability, phosphatability, paint adhesion, and post-painting corrosion resistance are provided by forming a coated layer containing Zn and Fe or one or more of Si oxides, Al oxides and Al hydroxides together therewith, on the surface of Al or Al alloy base. The surface-treated Al or Al alloy materials are useful as metallic material to be painted and used after press forming and other processing, spot or laser welding and phosphating, including panel materials for automobiles and other various vehicles, shells for housefold electrical apparatus, and building materials.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: July 4, 1995
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Masamichi Aono, Toshihiro Chikada, Souichi Hayashi, Asao Mochizuki, Hiroshi Sato, Kouki Ikeda, Jun Hisamoto, Nagisa Takee, Toshiki Ueda, Masao Takemoto, Hideo Fujimoto, Akihiro Tsuruno, Kikuo Toyose
  • Patent number: 4727001
    Abstract: An aluminum brazing sheet for use in brazing comprises;a core material composed of an aluminum alloy containing:0.2-1.0 wt % Cu,0.2-0.8 wt % Mg andat least one of the elements selected from:0.05-0.5 wt % Mn,0.05-0.5 wt % Zr,0.05-0.5 wt % Cr, andthe balance of Al and impurities, anda filler material composed of an Al-Si based alloy brazing material coated on one surface of said core material and a skin material composed of a sacrificial aluminum anode material at a purity higher than 99.0 wt % coated on the other surface of the core material. The aluminum brazing sheet according to this invention is satisfactory in the brazing property and also excellent in the corrosion resistance and the strength, which is suitable as the material for use in aluminum heat exchangers.
    Type: Grant
    Filed: October 1, 1986
    Date of Patent: February 23, 1988
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Masao Takemoto, Jun Takigawa, Tomohiro Nishimura, Kikuo Toyose
  • Patent number: 4721653
    Abstract: A vacuum brazing sheet for use in drawn-cup type heat exchanger made of aluminum with the degree of closure from 0.2 to 4.0 cm.sup.2 /l, wherein a brazing material containing:Si 11-14 wt. %Mg 1.0-2.0 wt. % andthe balance of Al is clad on one or both surfaces of aluminum or aluminum alloy material.The brazing performance can be improved and stabilized, and higher yield can be obtained.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: January 26, 1988
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Hidetaka Oda, Akio Fukada, Kikuo Toyose, Jun Takigawa, Masao Takemoto