Patents by Inventor Shogo Isobe

Shogo Isobe 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: 11337472
    Abstract: A glove is provided that enables suppression of cracks in a coating layer containing nitrile butadiene rubber as a principal component. The glove comprises: a glove main body made of fibers for covering a wearer's hand; and a coating layer which comprises nitrile butadiene rubber as a principal component and coats at least a part of an outer face of a palm region of the glove main body, in which: the coating layer comprises zinc oxide and a cross-linked product of the nitrile butadiene rubber and polycarbodiimide; and a mass ratio of the polycarbodiimide to the nitrile butadiene rubber is no less than 0.002. The mass ratio of the polycarbodiimide to the nitrile butadiene rubber is preferably no greater than 0.09. The content of the zinc oxide with respect to 100 parts by mass of the nitrile butadiene rubber is preferably from 0.3 to 5 parts by mass.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: May 24, 2022
    Assignee: Showa Glove Co.
    Inventors: Shogo Isobe, Tatsuya Sakamoto
  • Patent number: 10912342
    Abstract: A glove includes a glove main body for covering a wearer's hand, the glove main body containing nitrile-butadiene rubber as a principal component, wherein: the glove main body comprises zinc oxide, a vulcanizing agent, a vulcanization accelerating agent, and a cross-linked product from the nitrile-butadiene rubber and polycarbodiimide; a mass ratio of the polycarbodiimide to the nitrile-butadiene rubber is no less than 0.003 and no greater than 0.1; a mass ratio of the zinc oxide to the nitrile-butadiene rubber is no less than 0.010 and no greater than 0.05; and a MEK-absorption capacity of the glove main body is no greater than 25 times the glove main body on a mass basis. The percentage content of a MEK-insoluble matter in the glove main body is preferably no less than 65% by mass. The molar ratio of zinc oxide to the carbodiimide group in the polycarbodiimide is preferably 1 to 50.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: February 9, 2021
    Assignee: Showa Glove Co.
    Inventors: Shogo Isobe, Tatsuya Sakamoto
  • Publication number: 20190150537
    Abstract: A glove includes a glove main body for covering a wearer's hand, the glove main body containing nitrile-butadiene rubber as a principal component, wherein: the glove main body comprises zinc oxide, a vulcanizing agent, a vulcanization accelerating agent, and a cross-linked product from the nitrile-butadiene rubber and polycarbodiimide; a mass ratio of the polycarbodiimide to the nitrile-butadiene rubber is no less than 0.003 and no greater than 0.1; a mass ratio of the zinc oxide to the nitrile-butadiene rubber is no less than 0.010 and no greater than 0.05; and a MEK-absorption capacity of the glove main body is no greater than 25 times the glove main body on a mass basis. The percentage content of a MEK-insoluble matter in the glove main body is preferably no less than 65% by mass. The molar ratio of zinc oxide to the carbodiimide group in the polycarbodiimide is preferably 1 to 50.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 23, 2019
    Inventors: Shogo ISOBE, Tatsuya SAKAMOTO
  • Publication number: 20180249773
    Abstract: A glove is provided that enables suppression of cracks in a coating layer containing nitrile butadiene rubber as a principal component. The glove comprises: a glove main body made of fibers for covering a wearer's hand; and a coating layer which comprises nitrile butadiene rubber as a principal component and coats at least a part of an outer face of a palm region of the glove main body, in which: the coating layer comprises zinc oxide and a cross-linked product of the nitrile butadiene rubber and polycarbodiimide; and a mass ratio of the polycarbodiimide to the nitrile butadiene rubber is no less than 0.002. The mass ratio of the polycarbodiimide to the nitrile butadiene rubber is preferably no greater than 0.09. The content of the zinc oxide with respect to 100 parts by mass of the nitrile butadiene rubber is preferably from 0.3 to 5 parts by mass.
    Type: Application
    Filed: December 1, 2017
    Publication date: September 6, 2018
    Applicant: SHOWA GLOVE CO.
    Inventors: Shogo Isobe, Tatsuya Sakamoto