Patents by Inventor Tetsuyoshi Naito

Tetsuyoshi Naito 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 for anodizing aluminum and anodized aluminum
    Patent number: 8691403
    Abstract: A method for anodizing aluminum, wherein an object (29) made of aluminum or an aluminum alloy is anodized in an electrolytic solution (25), and thereby an anodized aluminum film is formed on a surface of the object (29), is provided. The electrolytic solution (25) is comprised of at least one acid selected from organic acids having two or more carboxylic groups, moves at an average speed of 15 cm/sec or less along at least an outer surface of the object (29). The anodization is performed under conditions that a temperature of the outer surface of the object (29) is 80° C. or less, and current density is in a range from 10 to 170 A/dm2.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: April 8, 2014
    Assignee: Denso Corporation
    Inventors: Seiji Amakusa, Tetsuyoshi Naito, Norihiro Tateiwa, Takanobu Iwade, Hiroshi Ohmi, Shinji Kurano, Koichi Yokoyama
  • Method for anodizing aluminum and anodized aluminum
    Publication number: 20110203933
    Abstract: A method for anodizing aluminum, wherein an object (29) made of aluminum or an aluminum alloy is anodized in an electrolytic solution (25), and thereby an anodized aluminum film is formed on a surface of the object (29), is provided. The electrolytic solution (25) is comprised of at least one acid selected from organic acids having two or more carboxylic groups, moves at an average speed of 15 cm/sec or less along at least an outer surface of the object (29). The anodization is performed under conditions that a temperature of the outer surface of the object (29) is 80° C. or less, and current density is in a range from 10 to 170 A/dm2.
    Type: Application
    Filed: December 23, 2009
    Publication date: August 25, 2011
    Applicant: DENSO CORPORATION
    Inventors: Seiji Amakusa, Tetsuyoshi Naito, Norihiro Tateiwa, Takanobu Iwade, Hiroshi Ohmi, Shinji Kurano, Koichi Yokoyama