Patents by Inventor Hironobu Wakasa

Hironobu Wakasa 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: 10717830
    Abstract: Provided is a polyamide resin composition for a slide fastener that includes at least one polyamide resin and reinforcing fibers, wherein a total mass of the polyamide resin and the reinforcing fibers accounts for 90% by mass or more of the composition; wherein poly(m-xylylene adipamide) (MXD 6) accounts for 60% by mass or more of the polyamide resin; wherein reinforcing fibers account for 45 to 70% by mass of the total mass of the polyamide resin and the reinforcing fibers; wherein both first reinforcing fibers having a fiber diameter of from 5 to 7 ?m and second reinforcing fibers having a fiber diameter larger than that of the first reinforcing fibers by more than 2 ?m account for 90% by mass or more of the reinforcing fibers; and wherein the first reinforcing fibers account for 20% by mass or more and less than 50% by mass of the reinforcing fibers.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: July 21, 2020
    Assignee: YKK Corporation
    Inventors: Kazuya Mizumoto, Hironobu Wakasa, Yasuhiro Yokogoshi, Norihide Ozaki
  • Publication number: 20190135994
    Abstract: Provided is a polyamide resin composition for a slide fastener that includes at least one polyamide resin and reinforcing fibers, wherein a total mass of the polyamide resin and the reinforcing fibers accounts for 90% by mass or more of the composition; wherein poly(m-xylylene adipamide) (MXD 6) accounts for 60% by mass or more of the polyamide resin; wherein reinforcing fibers account for 45 to 70% by mass of the total mass of the polyamide resin and the reinforcing fibers; wherein both first reinforcing fibers having a fiber diameter of from 5 to 7 ?m and second reinforcing fibers having a fiber diameter larger than that of the first reinforcing fibers by more than 2 ?m account for 90% by mass or more of the reinforcing fibers; and wherein the first reinforcing fibers account for 20% by mass or more and less than 50% by mass of the reinforcing fibers.
    Type: Application
    Filed: May 13, 2016
    Publication date: May 9, 2019
    Inventors: Kazuya Mizumoto, Hironobu Wakasa, Yasuhiro Yokogoshi, Norihide Ozaki
  • Patent number: 6866728
    Abstract: An aluminum alloy with excellent decorativeness, having a composition represented by the general formula AlaMgbMncCrd, wherein b, c, and d are, in mass percentage, 3.0?b?5.6, 0.05?c?1.0, 0.05?d?0.7, c+d>0.2, and a is the balance with unavoidable impurity elements possibly being contained, wherein a matrix of the aluminum alloy is a structure substantially composed of an aluminum solid solution, in which no ?-phase is present. This alloy has excellent decorativeness and decorativeness as well as superior strength, hardness and other such mechanical properties and is useful as materials for slide fastener constituent members, such as their elements, stops, and sliders, and/or in snap buttons, ordinary buttons, and clasps.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: March 15, 2005
    Assignee: YKK Corporation
    Inventors: Masataka Kawazoe, Koichi Mikado, Hironobu Wakasa, Futoshi Kozato, Yusuke Meiwa
  • Publication number: 20040163739
    Abstract: An aluminum alloy with excellent decorativeness, having a composition represented by the general formula AlaMgbMncCrd, wherein b, c, and d are, in mass percentage, 3.0≦b≦5.6, 0.05≦c≦1.0, 0.05≦d≦0.7, c+d>0.2, and a is the balance with unavoidable impurity elements possibly being contained, wherein a matrix of the aluminum alloy is a structure substantially composed of an aluminum solid solution, in which no &bgr;-phase is present. This alloy has excellent decorativeness and decorativeness as well as superior strength, hardness and other such mechanical properties and is useful as materials for slide fastener constituent members, such as their elements, stops, and sliders, and/or in snap buttons, ordinary buttons, and clasps.
    Type: Application
    Filed: February 4, 2004
    Publication date: August 26, 2004
    Applicant: YKK CORPORATION
    Inventors: Masataka Kawazoe, Koichi Mikado, Hironobu Wakasa, Futoshi Kozato, Yusuke Meiwa
  • Publication number: 20020048684
    Abstract: A nickel-free white copper alloy material, wherein a white coating layer containing no Ni is formed on a base material composed of an alloy represented by the general formula: CuaZnbMnc MdXe, wherein M is at least one element selected from the group consisting of Al and Sn; X is at least one element selected from the group consisting of Si, Ti and Cr; b, c, d and e are 0≦b≦22, 7≦c≦20, 0≦d≦5 and 0≦e≦0.3 in terms of % by weight; and a is the balance, the alloy incidentally including unavoidable elements. The white copper alloy material has excellent strength and hardness equal to those nickel silver, as well as excellent workability, corrosion resistance and whiteness in addition to ductility, and has no fear of allergic reactions because of containing no Ni. In the white copper alloy material, fine adjustment of its white hue is possible according to the demand of customers, and satisfactory mechanical properties can be obtained with the desired hue.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 25, 2002
    Applicant: YKK Corporation
    Inventors: Yasuhiko Sugimoto, Norio Kikukawa, Yasuharu Yoshimura, Hironobu Wakasa, Kazuhiko Kita