Patents by Inventor Takashi Toyozumi

Takashi Toyozumi 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).

  • Publication number: 20210108040
    Abstract: A composite material includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni×Di2) is 6.7×101 to 3.3×103, and a thermoplastic matrix resin. The carbon fibers A have a fiber length of 5-100 mm and the carbon fiber bundles A1 are contained in an amount of 80 vol % or larger but less than 100 vol % with respect to the carbon fibers A and wherein removal of the matrix resin from the composite material gives a carbon fiber mass which, when compressed to a thickness of Tf, has a repulsive force P of 0.05-1.00 MPa A method for producing the composite material including subjecting a composite composition to an impregnation treatment with a compression/impregnation device.
    Type: Application
    Filed: November 21, 2018
    Publication date: April 15, 2021
    Applicant: Teijin Limited
    Inventors: Shuhei Onoue, Takumi Kato, Takashi Toyozumi, Makoto Ootsubo, Takeru Ohki, Guofei Hua, Akihisa Nomura
  • Publication number: 20210003538
    Abstract: The present invention provides a method for inspecting a material to be inspected using ultrasound waves, the method including the following step 201 to step 301, in which step 201 is performed in a condition where: the surface temperature of a material under inspection—atmospheric temperature >2° C., and inspection using ultrasound waves in step 301 satisfies: a refractive attenuation rate ?1.5%. Step 201: blowing a fluid from a blowing port onto the material to be inspected. Step 301: inspecting the material to be inspected using the ultrasound waves after step 201 or at the same time as the step 201.
    Type: Application
    Filed: March 6, 2019
    Publication date: January 7, 2021
    Applicant: Teijin Limited
    Inventors: Takashi Toyozumi, Hodaka Yokomizo, Makoto Ootsubo, Shuhei Suzuki, Akihiko Obata
  • Publication number: 20200369843
    Abstract: A composite material which includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni×Di2) satisfies 6.7×101 to 3.3×103, wherein the carbon fibers A have a fiber length of 5-100 mm and have a value of LwA1/(NA1ave×DA12) of 1.0×102 to 3.3×103, the carbon fiber bundles A1 having an average bundle width WA1 less than 3.5 mm and being contained in an amount of 90 vol % or larger with respect to the carbon fibers A A production method for producing a molded object from the composite material-is also provided.
    Type: Application
    Filed: November 21, 2018
    Publication date: November 26, 2020
    Applicant: Teijin Limited
    Inventors: Makoto Ootsubo, Takeru Ohki, Guofei Hua, Akihisa Nomura, Shuhei Suzuki, Shuhei Onoue, Takumi Kato, Takashi Toyozumi
  • Publication number: 20190284064
    Abstract: An electrolytic treatment apparatus is provided. The electrolytic treatment apparatus includes: an electrolytic tank having a cathode and an anode: an injecting portion that injects a liquid into the electrolytic tank; at least one diaphragm that partitions an inner space of the electrolytic tank into a cathode-side region including the cathode and an anode-side region including the anode, and makes a liquid in the cathode-side region and a liquid in the anode-side region electrically connected; a cathode-side discharging portion that supplies, to an exhaust gas treatment apparatus, a cathode-side solution generated in the cathode-side region by electrolyzing the liquid; and an anode-side discharging portion that supplies, to a sterilizing apparatus, an anode-side solution generated in the anode-side region by electrolyzing the liquid.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Inventors: Takashi INUI, Hiroyuki TOYOZUMI, Akinori ZUKERAN, Tomohiro OKU, Yuta NAKADA
  • Publication number: 20170106606
    Abstract: The present invention is aimed to provide a carbon fiber reinforced resin processed product which is almost free from the problems described above on a processed surface subjected to cutting or the like and has an end surface where generation of a burr is suppressed, has favorable surface properties, and surface nature, and particularly smoothness is excellent; and provides a carbon fiber reinforced resin processed product having an end surface which has fibers and a resin, wherein the end surface has a surface roughness (Rz) within a range from 5 ?m to 50 ?m.
    Type: Application
    Filed: April 23, 2015
    Publication date: April 20, 2017
    Applicant: Teijin Limited
    Inventors: Takashi Toyozumi, Syuhei Suzuki
  • Patent number: 9556891
    Abstract: There is provided a joined body in which two or more members Yi including a fitting hole are fastened, in which a fastening rod including reinforcing fibers and a thermoplastic resin is positioned in the fitting hole, the fastening rod is caulked by heat, and the members Yi are caulking-fastened.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: January 31, 2017
    Assignee: Teijin Limited
    Inventors: Takashi Toyozumi, Masumi Hirata, Hiroki Sano, Takeru Ohki, Jianwei Shi
  • Publication number: 20160061245
    Abstract: There is provided a joined body in which two or more members Yi including a fitting hole are fastened, in which a fastening rod including reinforcing fibers and a thermoplastic resin is positioned in the fitting hole, the fastening rod is caulked by heat, and the members Yi are caulking-fastened.
    Type: Application
    Filed: February 27, 2015
    Publication date: March 3, 2016
    Applicant: Teijin Limited
    Inventors: Takashi Toyozumi, Masumi Hirata, Hiroki Sano, Takeru Ohki, Jianwei Shi