Patents by Inventor Hiroaki Kadoura

Hiroaki Kadoura 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: 10907267
    Abstract: A metal-resin composite material including an aluminum substrate having an aluminum oxide coating and a resin bonded to the aluminum substrate through the aluminum oxide coating, wherein the aluminum oxide coating has a porous surface layer in which columns with an average height of 10 to 100 nm are arranged in a dispersed state, an average value of sums of cross-sectional areas of the columns in randomly sampled 400 nm square visual fields of the porous surface layer is 8000 to 128000 nm2, an average value of sums of circumferential lengths of cross-sections of the columns in randomly sampled 400 nm square visual fields of the porous surface layer is 1000 to 27000 nm, and an average value of numbers of the columns in randomly sampled 400 nm square visual fields of the porous surface layer is 10 to 430.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: February 2, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Kazuhiko Umemoto, Takuro Matsunaga, Kenzo Fukumori, Hideaki Matsuoka, Shuxin Dong, Hiroaki Kadoura
  • Publication number: 20160194779
    Abstract: A metal-resin composite material including an aluminum substrate having an aluminum oxide coating and a resin bonded to the aluminum substrate through the aluminum oxide coating, wherein the aluminum oxide coating has a porous surface layer in which columns with an average height of 10 to 100 nm are arranged in a dispersed state, an average value of sums of cross-sectional areas of the columns in randomly sampled 400 nm square visual fields of the porous surface layer is 8000 to 128000 nm2, an average value of sums of circumferential lengths of cross-sections of the columns in randomly sampled 400 nm square visual fields of the porous surface layer is 1000 to 27000 nm, and an average value of numbers of the columns in randomly sampled 400 nm square visual fields of the porous surface layer is 10 to 430.
    Type: Application
    Filed: December 5, 2014
    Publication date: July 7, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Kazuhiko UMEMOTO, Takuro MATSUNAGA, Kenzo FUKUMORI, Hideaki MATSUOKA, Shuxin DONG, Hiroaki KADOURA
  • Patent number: 7658538
    Abstract: A method for evaluating a solder joint portion by means of which a part and a substrate are joined to each other includes a preparation process for preparing the substrate including the solder joint portion, a thermal shock process for applying thermal shock to the solder joint portion multiple times, and an evaluation process for obtaining a change of a crystal grain size in the solder joint portion caused by the application of the thermal shock so as to evaluate a lifespan of the solder joint portion based on the change of the crystal grain size obtained.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: February 9, 2010
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hirofumi Koike, Akikazu Matsumoto, Wataru Yagi, Takefumi Isogai, Yoshiharu Hirose, Hiroaki Kadoura, Juntaro Seki, Hisaaki Takao
  • Publication number: 20080240201
    Abstract: A method for evaluating a solder joint portion by means of which a part and a substrate are joined to each other includes a preparation process for preparing the substrate including the solder joint portion, a thermal shock process for applying thermal shock to the solder joint portion multiple times, and an evaluation process for obtaining a change of a crystal grain size in the solder joint portion caused by the application of the thermal shock so as to evaluate a lifespan of the solder joint portion based on the change of the crystal grain size obtained.
    Type: Application
    Filed: March 27, 2008
    Publication date: October 2, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hirofumi KOIKE, Akikazu MATSUMOTO, Wataru YAGI, Takefumi ISOGAI, Yoshiharu HIROSE, Hiroaki KADOURA, Juntaro SEKI, Hisaaki TAKAO