Patents by Inventor Kensuke Shimoda

Kensuke Shimoda 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 surface treating aluminum alloy base body of heat exchanger and heat exchanger produced by the method
    Patent number: 7353863
    Abstract: A method of surface treating an aluminum alloy base body of an heat exchanger which method enables an etching procedure to be carried out uniformly and quickly and a corrosion-resistant chemical conversion coating to be formed, is effected by pretreating the Al heat exchanger base body with an aqueous pre-treating liquid having a pH of 9.0 or less, etching the pretreated base body with an aqueous alkaline solution having a pH of 9.0 or more, and then subjecting the etched base body to a chemical conversion treatment or a hydrophilicity-enhancing treatment.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: April 8, 2008
    Assignee: Denso Corporation
    Inventors: Kengo Kobayashi, Osamu Kasebe, Hiroyoshi Sugawara, Kazuhisa Uchiyama, Kenji Karube, Kazunari Hamamura, Kensuke Shimoda
  • Method of surface treating aluminum alloy base body of heat exchanger and heat exchanger produced by the method
    Publication number: 20040256089
    Abstract: A method of surface treating an aluminum alloy base body of an heat exchanger which method enables an etching procedure to be carried out uniformly and quickly and a corrosion-resistant chemical conversion coating to be formed, is effected by pretreating the Al heat exchanger base body with an aqueous pre-treating liquid having a pH of 9.0 or less, etching the pretreated base body with an aqueous alkaline solution having a pH of 9.0 or more, and then subjecting the etched base body to a chemical conversion treatment or a hydrophilicity-enhancing treatment.
    Type: Application
    Filed: May 12, 2004
    Publication date: December 23, 2004
    Inventors: Kengo Kobayashi, Osamu Kasebe, Hiroyoshi Sugawara, Kazuhisa Uchiyama, Kenji Karube, Kazunari Hamamura, Kensuke Shimoda
  • Conditioning metal surfaces before phosphating them
    Patent number: 6478860
    Abstract: A highly effective and storage stable conditioning treatment for metal surfaces prior to phosphating them is a suspension in water containing solid miorosize particles of at least one phosphate of a divalent or trivalent metal and an accelerant selected from the group consisting of sacoharides and their derivatives thereof, orthophosphoric acid, condensed phosphoric acids, organophosphonic acids, and polymers of vinyl acetate and/or carboxylic acid. The surface conditioning liquid composition is used simply by effecting contact between the metal and the liquid composition, and can also be used to simultaneously carry out degreasing, particularly when the conditioning liquid also contains nonionic or anionic surfactant.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: November 12, 2002
    Assignee: Henkel Corporation
    Inventors: Takaomi Nakayama, Yasuhiko Nagashima, Kensuke Shimoda, Hirokastu Bannai
  • Conditioning metal surfaces prior to phosphate conversion coating
    Patent number: 6214132
    Abstract: A pretreatment before phosphating conversion coating is effected by contacting a metal substrate to be coated with a pretreatment composition that has a pH from 4 to 13 and contains dispersed fine particle size alkali metal or ammonium salts and divalent or trivalent metal phosphates. The conditioning achieved is as good as with conventional Jernstedt salts and the pretreatment compositions according to the invention are more storage stable.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: April 10, 2001
    Assignee: Henkel Corporation
    Inventors: Takaomi Nakayama, Yasuhiko Nagashima, Kensuke Shimoda