Patents by Inventor Tatsuro OHZEKI

Tatsuro OHZEKI 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: 20230270194
    Abstract: The present invention relates to a flame-retardant fabric that includes modacrylic fibers, one or more of regenerated cellulose fibers selected from the group consisting of flame-retardant rayon fibers and lyocell fibers, and polyimide fibers. The flame-retardant fabric includes the modacrylic fibers in an amount of 26 to 79 wt%, the regenerated cellulose fibers in an amount of 18 to 48 wt%, and the polyimide fibers in an amount of 3 to 26 wt%. The polyimide fibers have a fiber length of 45 to 127 mm. The char length measured by a flammability test based on GB/T 5455-1997 is 50 mm or less. The present invention also relates to protective clothing made of the flame-retardant fabric. Thus, the present invention provides a flame-retardant fabric whose char length is short in a flammability test and that has favorable flame retardancy, and protective clothing made of the flame-retardant fabric.
    Type: Application
    Filed: September 28, 2020
    Publication date: August 31, 2023
    Applicant: KANEKA CORPORATION
    Inventors: Shigeki OHNO, Tatsuro OHZEKI
  • Publication number: 20230019403
    Abstract: A cloth for mattress including a knitted fabric that is knitted from blended yarns contains flame retardant rayon fibers, modacrylic fibers, polyimide fibers, and low-melting polyester fibers. The cloth for mattress can be obtained by producing blended yarns containing the flame retardant rayon fibers, the modacrylic fibers, the polyimide fibers, and the low-melting polyester fibers, and producing a knitted fabric by knitting the blended yarns. The cloth for mattress has excellent flame retardancy, ensures easy handling when used to cover a mattress, is resistant to pilling without reducing the strength of the blended yarns, and is also safe for contact with the human body.
    Type: Application
    Filed: September 1, 2022
    Publication date: January 19, 2023
    Applicants: KANEKA CORPORATION, DITGREEN CO., LTD.
    Inventors: Soon-Yong Park, Hyo-Sup Chang, Woo-Hyung Lee, Mi-Young Jung, Tatsuro Ohzeki
  • Patent number: 11198957
    Abstract: A fabric for arc-protective garments includes first yarns and second yarns different from the first yarns. The first yarns include first modacrylic fibers, and the first modacrylic fibers contain an infrared absorber in an amount of 2.5 wt % or more with respect to a total weight of the first modacrylic fibers. The weight of the infrared absorber per unit area in the fabric for arc-protective garments is 0.05 oz/yd2 or more. An arc-protective garment includes the fabric for arc-protective garments.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: December 14, 2021
    Assignee: KANEKA CORPORATION
    Inventors: Motohiro Sato, Yoshitomo Matsumoto, Tatsuro Ohzeki, Wataru Mio, Yasunori Tanaka, Yuto Utsunomiya, Tomoya Matsushima
  • Patent number: 10577724
    Abstract: An arc resistant acrylic fiber includes an acrylic polymer. The arc resistant acrylic fiber also includes an infrared absorber in an amount of 1 wt % to 30 wt % with respect to a total weight of the acrylic polymer.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: March 3, 2020
    Assignee: KANEKA CORPORATION
    Inventors: Tatsuro Ohzeki, Keita Uchibori, Wataru Mio, Yasunori Tanaka, Yuto Utsunomiya
  • Patent number: 10450679
    Abstract: A flame-retardant fabric may include a cellulosic fiber and a modacrylic fiber, the cellulosic fiber being a natural cellulose fiber containing a phosphorus compound, the modacrylic fiber containing an antimony compound, the flame-retardant fabric including the modacrylic fiber containing the antimony compound in an amount of 14 to 54 wt %, antimony in an amount of not less than 1.7 wt %, and phosphorus in an amount of 0.3 to 1.5 wt % with respect to the total weight of the flame-retardant fabric, and the flame-retardant fabric having a weight per unit area of not less than 160 g/m2. The flame-retardant fabric can be produced by subjecting a fabric including a natural cellulose fiber and a modacrylic fiber containing an antimony compound to flame-retardant treatment with a phosphorus compound.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: October 22, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Yoshitomo Matsumoto, Tatsuro Ohzeki, Fukashi Shibuya, Kazuya Kusunoki
  • Publication number: 20180371647
    Abstract: A fabric for arc-protective garments includes first yarns and second yarns different from the first yarns. The first yarns include first modacrylic fibers, and the first modacrylic fibers contain an infrared absorber in an amount of 2.5 wt % or more with respect to a total weight of the first modacrylic fibers. The weight of the infrared absorber per unit area in the fabric for arc-protective garments is 0.05 oz/yd2 or more. An arc-protective garment includes the fabric for arc-protective garments.
    Type: Application
    Filed: August 30, 2018
    Publication date: December 27, 2018
    Applicant: Kaneka Corporation
    Inventors: Motohiro Sato, Yoshitomo Matsumoto, Tatsuro Ohzeki, Wataru Mio, Yasunori Tanaka, Yuto Utsunomiya, Tomoya Matsushima
  • Publication number: 20170295875
    Abstract: An arc resistant acrylic fiber includes an acrylic polymer. The arc resistant acrylic fiber also includes an infrared absorber in an amount of 1 wt % to 30 wt % with respect to a total weight of the acrylic polymer.
    Type: Application
    Filed: July 5, 2017
    Publication date: October 19, 2017
    Applicant: Kaneka Corporation
    Inventors: Tatsuro Ohzeki, Keita Uchibori, Wataru Mio, Yasunori Tanaka, Yuto Utsunomiya
  • Publication number: 20160201236
    Abstract: A flame-retardant fabric may include a cellulosic fiber and a modacrylic fiber, the cellulosic fiber being a natural cellulose fiber containing a phosphorus compound, the modacrylic fiber containing an antimony compound, the flame-retardant fabric including the modacrylic fiber containing the antimony compound in an amount of 14 to 54 wt %, antimony in an amount of not less than 1.7 wt %, and phosphorus in an amount of 0.3 to 1.5 wt % with respect to the total weight of the flame-retardant fabric, and the flame-retardant fabric having a weight per unit area of not less than 160 g/m2. The flame-retardant fabric can be produced by subjecting a fabric including a natural cellulose fiber and a modacrylic fiber containing an antimony compound to flame-retardant treatment with a phosphorus compound.
    Type: Application
    Filed: August 22, 2014
    Publication date: July 14, 2016
    Inventors: Yoshitomo MATSUMOTO, Tatsuro OHZEKI, Fukashi SHIBUYA, Kazuya KUSUNOKI