Patents by Inventor Tetsutaro Ogushi

Tetsutaro Ogushi 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).

  • Metal material having formed thereon chromium oxide passive film and method for producing the same, and parts contacting with fluid and system for supplying fluid and exhausting gas
    Patent number: 8137787
    Abstract: The object of the present invention is to form a chromium-oxide film, excellent in corrosion resistance, without containing an oxide film of other metal onto the metallic material. The chromium-oxide passivation film, excellent in corrosion resistance, without containing the oxide film of other metal can be formed inexpensively and in a short time, and a fluid supplying system for safely supplying fluid with hard corrosivity is able to be provided. One step of forming the passivation film consisting of a chromium oxide layer by giving heat treatment, in an oxidizing atmosphere, after coating chromium on the metallic material having a surface roughness (Ra) not more than 1.5 ?m.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: March 20, 2012
    Assignees: Fujikin, Inc.
    Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Nobukazu Ikeda, Eiji Ideta, Akihiro Morimoto, Tetsutaro Ogushi, Takehisa Konishi
  • Metal material having formed thereon chromium oxide passive film and method for producing the same, and parts contacting with fluid and system for supplying fluid and exhausting gas
    Patent number: 7935385
    Abstract: The object of the present invention is to form a chromium-oxide film excellent in corrosion resistance without containing an oxide film of other metal onto the optional metallic material. The chromium-oxide passivation film excellent in corrosion resistance without containing the oxide film of other metal can be formed inexpensively and in a short time, and a fluid supplying system for supplying fluid hard in corrosivity in safety is able to be provided. This invention comprises a step of forming the passivation film consisting of a chromium oxide by giving heat treatment in an oxidizing atmosphere after coating chromium on metallic material of which surface roughness (Ra) of a coat surface is not more than 1.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: May 3, 2011
    Assignees: Fujikin, Inc.
    Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Nobukazu Ikeda, Eiji Ideta, Akihiro Morimoto, Tetsutaro Ogushi, Takehisa Konishi
  • Metal material having formed thereon chromium oxide passive film and method for producing the same, and parts contacting with fluid and system
    Publication number: 20080003441
    Abstract: The object of the present invention is to form a chromium-oxide film excellent in corrosion resistance without containing an oxide film of other metal onto the optional metallic material. The chromium-oxide passivation film excellent in corrosion resistance without containing the oxide film of other metal can be formed inexpensively and in a short time, and a fluid supplying system for supplying fluid hard in corrosivity in safety is able to be provided. This invention comprises a step of forming the passivation film consisting of a chromium oxide by giving heat treatment in an oxidizing atmosphere after coating chromium on metallic material of which surface roughness (Ra) of a coat surface is not more than 1.
    Type: Application
    Filed: July 30, 2007
    Publication date: January 3, 2008
    Applicant: TADAHIRO OHMI
    Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Nobukazu Ikeda, Eiji Ideta, Akihiro Morimoto, Tetsutaro Ogushi, Takehisa Konishi
  • Metal material having formed thereon chromium oxide passive film and method for producing the same, and parts contacting with fluid and system for supplying fluid and exhausting gas
    Publication number: 20060174977
    Abstract: The object of the present invention is to form a chromium-oxide film excellent in corrosion resistance without containing an oxide film of other metal onto the optional metallic material. The chromium-oxide passivation film excellent in corrosion resistance without containing the oxide film of other metal can be formed inexpensively and in a short time, and a fluid supplying system for supplying fluid hard in corrosivity in safety is able to be provided. This invention comprises a step of forming the passivation film consisting of a chromium oxide by giving heat treatment in an oxidizing atmosphere after coating chromium on metallic material of which surface roughness (Ra) of a coat surface is not more than 1.
    Type: Application
    Filed: August 21, 2003
    Publication date: August 10, 2006
    Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Nobukazu Ikeda, Eiji Ideta, Akihiro Morimoto, Tetsutaro Ogushi, Takehisa Konishi
  • Process for surface treatment of stainless steel sheet
    Patent number: 4427499
    Abstract: A process for surface treatment of stainless steel sheets for excellent corrosion resistance and gloss is provided according to which a BA film or a passive film is formed on the stainless steel sheet; the sheet is dipped in a treatment solution containing 0.1 to 50% by weight of phosphoric acid, 0.1 to 10.0% by weight of a molybdate, chromic acid or a mixture thereof, and 0.1 to 2.0% by weight of magnesium oxide, sodium silicate or a mixture thereof; and cathodic treatment is carried out under the conditions of 1 to 600 A.sec/dm.sup.2 integrated electric current density and 0.degree. to 90.degree. C. solution temperature.
    Type: Grant
    Filed: July 29, 1981
    Date of Patent: January 24, 1984
    Assignee: Nippon Kinzoku Co., Ltd.
    Inventors: Tomoge Hitomi, Takehisa Konishi, Tetsutaro Ogushi, Kazuaki Hatakeyama