Patents by Inventor Kazuhiko Umemoto

Kazuhiko Umemoto 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: 20190276720
    Abstract: Provided is a joined body comprising a first joined member, a second joined member, and a joining layer that joins the first joined member and the second joined member, wherein the first joined member and the second joined member are each independently one selected from the group consisting of a metal member, a polyamide resin member, and a polyolefin resin member, the joining layer is a layer formed of a resin composition having a co-continuous phase including a continuous phase A formed of the polyamide resin and a continuous phase B formed of the polyolefin resin and has a dispersed domain a distributed in the continuous phase A, a finely dispersed subdomain a? distributed in the dispersed domain a, a dispersed domain b distributed in the continuous phase B, and a finely dispersed subdomain b? distributed in the dispersed domain b.
    Type: Application
    Filed: February 27, 2019
    Publication date: September 12, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hisato Takeuchi, Jumpei Kawada, Azusa Tsukigase, Natsu Takagi, Takuya Mitsuoka, Kazuhiko Umemoto
  • Publication number: 20180264696
    Abstract: An object is to provide a metal-resin bonded member that is easy to manufacture and has high bonding strength. The metal-resin bonded member includes a metal body having an iron oxide layer on the surface and a resin body bonded to the metal body via the iron oxide layer. The iron oxide layer has a thickness of 50 nm to 10 ?m. The iron oxide layer comprises 60-40 at % Fe and 40-60 at % O at the outermost surface side. The iron oxide layer contains magnetite (Fe3O4). The iron oxide layer is formed by heating the surface of an iron-based substrate at 200-850° C. in an oxidation atmosphere. The resin body is composed of polyphenylene sulfide (PPS). The bonding of the metal body and the resin body via the iron oxide layer can be carried out by insert molding, thermal adhesion utilizing friction heating, etc.
    Type: Application
    Filed: October 14, 2016
    Publication date: September 20, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Kazuhiko UMEMOTO, Hirotaka OKAMOTO, Yuji KANEKO, Shuxin DONG, Yusuke YAGI, Takeshi UYAMA
  • 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: 8063207
    Abstract: A molecular assembly comprising a host metal complex with a space formed therein, and compounds having substituents enclosed in the metal complex within the space and molecular chains bonded to the substituents and extending to the exterior of the metal complex, wherein two or more substituents are enclosed in the same space of the metal complex.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: November 22, 2011
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, The University of Tokyo
    Inventors: Kazuhiko Umemoto, Hisato Takeuchi, Hiroshi Nakamura, Arimitsu Usuki, Makoto Fujita
  • Publication number: 20090082563
    Abstract: A molecular assembly comprising a host metal complex with a space formed therein, and compounds having substituents enclosed in the metal complex within the space and molecular chains bonded to the substituents and extending to the exterior of the metal complex, wherein two or more substituents are enclosed in the same space of the metal complex.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 26, 2009
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, THE UNIVERSITY OF TOKYO
    Inventors: Kazuhiko UMEMOTO, Hisato TAKEUCHI, Hiroshi NAKAMURA, Arimitsu USUKI, Makoto FUJITA
  • Publication number: 20060142505
    Abstract: An aliphatic polyester composition contains a low-molecular-weight aliphatic polyester having weight-average molecular weight of 5000 to 35000 and a high-molecular-weight aliphatic polyester having weight-average molecular weight of 120000 to 1000000.
    Type: Application
    Filed: December 27, 2005
    Publication date: June 29, 2006
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuhiko Umemoto, Hirotaka Okamoto, Mitsuru Nakano, Arimitsu Usuki, Yuichi Miyake, Masatoshi Matsuda