Patents by Inventor Hiromichi Yonekura

Hiromichi Yonekura 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: 20220363849
    Abstract: A first object of the present invention is to provide a stretchable conductor sheet that exhibits isotropic conductivity when stretched in a predetermined direction or in a direction perpendicular to the predetermined direction, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. A second object of the present invention is to provide a stretchable conductor sheet having a small change in specific resistance even when repeatedly twisted, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. A third object of the present invention is to provide a stretchable conductor sheet having a small change in specific resistance even when repeatedly washed, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet.
    Type: Application
    Filed: July 19, 2022
    Publication date: November 17, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Michihiko IRIE, Satoshi IMAHASHI, Hiromichi YONEKURA, Takashi KONDO, Maki KINAMI
  • Patent number: 11427689
    Abstract: A first object of the present invention is to provide a stretchable conductor sheet that exhibits isotropic conductivity when stretched in a predetermined direction or in a direction perpendicular to the predetermined direction, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. A second object of the present invention is to provide a stretchable conductor sheet having a small change in specific resistance even when repeatedly twisted, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. A third object of the present invention is to provide a stretchable conductor sheet having a small change in specific resistance even when repeatedly washed, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: August 30, 2022
    Assignee: TOYOBO CO., LTD.
    Inventors: Michihiko Irie, Satoshi Imahashi, Hiromichi Yonekura, Takashi Kondo, Maki Kinami
  • Patent number: 11130888
    Abstract: An objective is to provide a stretchable conductor sheet which is useful as a material for electrical wiring and electrodes for garment-type electronic devices, the material having excellent durability in terms of washing and durability in terms of perspiration. A fabric provided with an electrode and an electrical wiring, which are formed from a stretchable conductor sheet, is obtained by: providing a film having releasability with a first stretchable conductor layer which is formed from a paste material that uses carbon-based particles as a conductive filler, while using a flexible resin as a binder resin; subsequently forming a second stretchable conductor layer, while using metal-based particles as a conductive filler; laminating a hot melt adhesive layer thereon; superposing the resulting laminate on a fabric after removing unnecessary parts from the laminate by means of partial slits; and subjecting the resulting fabric to hot pressing.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: September 28, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Euichul Kwon, Sonoko Ishimaru, Michihiko Irie, Hiromichi Yonekura, Shota Morimoto
  • Patent number: 11067892
    Abstract: The present invention aims to provide a CTP flexographic printing original plate having such high performances that, even under a severe low-temperature condition of 10° C. or lower, no crack is generated in a heat-sensitive mask layer and further that, even when the heat-sensitive mask layer is formed as a thin film, no unevenness is generated in an optical density in transmission. A photosensitive CTP flexographic printing original plate, characterized in that, it comprise at least a support, a photosensitive resin layer and a heat-sensitive mask layer which are sequentially layered, that the heat-sensitive mask layer contains a methoxymethylated polys side resin (A) and a water-soluble polyamide resin (B) containing a basic nitrogen atom in a molecule, and that a glass transition point of the polyimide resin (A) is 0° C. to 30° C.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: July 20, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Keisuke Matsuo, Hiromichi Yonekura
  • Patent number: 10857826
    Abstract: The present invention aims to provide a photosensitive CTP flexographic printing original plate wherein no wrinkle is generated during handling of the CTP printing original plate against environmental changes throughout the year and barrier property is also excellent. A water-developable photosensitive CTP flexographic printing original plate which is characterized in that it comprises at least a support, a photosensitive resin layer, a barrier layer and a heat-sensitive mask layer which are sequentially layered, that the barrier layer contains a polyamide resin (A) containing a basic nitrogen atom in a molecule and a polyamide resin (B) containing 40 to 70% by mass of an alkylene glycol structural unit in a molecule, and that a content of the polyamide resin (B) to a total content of the polyamide resin (A) and the polyamide resin (B) is 25 to 52% by mass.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: December 8, 2020
    Assignee: TOYOBO CO., LTD.
    Inventors: Keisuke Matsuo, Hiromichi Yonekura
  • Publication number: 20200291273
    Abstract: An objective is to provide a stretchable conductor sheet which is useful as a material for electrical wiring and electrodes for garment-type electronic devices, the material having excellent durability in terms of washing and durability in terms of perspiration. A fabric provided with an electrode and an electrical wiring, which are formed from a stretchable conductor sheet, is obtained by: providing a film having releasability with a first stretchable conductor layer which is formed from a paste material that uses carbon-based particles as a conductive filler, while using a flexible resin as a binder resin; subsequently forming a second stretchable conductor layer, while using metal-based particles as a conductive filler; laminating a hot melt adhesive layer thereon; superposing the resulting laminate on a fabric after removing unnecessary parts from the laminate by means of partial slits; and subjecting the resulting fabric to hot pressing.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 17, 2020
    Applicant: TOYOBO CO., LTD.
    Inventors: Euichul KWON, Sonoko ISHIMARU, Michihiko IRIE, Hiromichi YONEKURA, Shota MORIMOTO
  • Publication number: 20200073242
    Abstract: The present invention aims to provide a CTP flexographic printing original plate having such high performances that, even under a severe low-temperature condition of 10° C. or lower, no crack is generated in a heat-sensitive mask layer and further that, even when the heat-sensitive mask layer is formed as a thin film, no unevenness is generated in an optical density in transmission. A photosensitive CTP flexographic printing original plate, characterized in that, it comprise at least a support, a photosensitive resin layer and a heat-sensitive mask layer which are sequentially layered, that the heat-sensitive mask layer contains a methoxymethylated polys side resin (A) and a water-soluble polyamide resin (B) containing a basic nitrogen atom in a molecule, and that a glass transition point of the polyimide resin (A) is 0° C. to 30° C.
    Type: Application
    Filed: January 12, 2018
    Publication date: March 5, 2020
    Applicant: TOYOBO CO., LTD.
    Inventors: Keisuke Matsuo, Hiromichi Yonekura
  • Patent number: 10546664
    Abstract: The purpose of the present invention is to provide a stretchable conductor that can be used to form a film having good repeated stretching durability, a garment-type election device that has a wire using the stretchable conductor, and a method for producing the same. Conductive particles, preferably silver particles, a predetermined quantity of a specific barium sulfate, and a flexible resin component are mixed together to obtain a stretchable conductor composition. A sheet made from the stretchable conductor composition thus obtained has a low initial conductivity, and a high conductivity retention rate when repeatedly stretched. By cutting the stretchable conductor composition into a predetermined shape and affixing the composition to fabric or the like that constitutes a garment, it is possible to achieve a garment-type device having electrical wiring with high stretchability.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: January 28, 2020
    Assignee: TOYOBO CO., LTD.
    Inventors: Hiromichi Yonekura, Satoshi Imahashi, Michihiko Irie, Takashi Kondo, Maki Kinami
  • Publication number: 20190375227
    Abstract: The present invention aims to provide a photosensitive CTP flexographic printing original plate wherein no wrinkle is generated during handling of the CTP printing original plate against environmental changes throughout the year and barrier property is also excellent. A water-developable photosensitive CTP flexographic printing original plate which is characterized in that it comprises at least a support, a photosensitive resin layer, a barrier layer and a heat-sensitive mask layer which are sequentially layered, that the barrier layer contains a polyamide resin (A) containing a basic nitrogen atom in a molecule and a polyamide resin (B) containing 40 to 70% by mass of an alkylene glycol structural unit in a molecule, and that a content of the polyamide resin (B) to a total content of the polyamide resin (A) and the polyamide resin (B) is 25 to 52% by mass.
    Type: Application
    Filed: March 27, 2018
    Publication date: December 12, 2019
    Applicant: TOYOBO CO., LTD.
    Inventors: Keisuke Matsuo, Hiromichi Yonekura
  • Publication number: 20190077930
    Abstract: A first object of the present invention is to provide a stretchable conductor sheet that exhibits isotropic conductivity when stretched in a predetermined direction or in a direction perpendicular to the predetermined direction, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. A second object of the present invention is to provide a stretchable conductor sheet having a small change in specific resistance even when repeatedly twisted, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. A third object of the present invention is to provide a stretchable conductor sheet having a small change in specific resistance even when repeatedly washed, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet.
    Type: Application
    Filed: March 8, 2017
    Publication date: March 14, 2019
    Applicant: TOYOBO CO., LTD.
    Inventors: Michihiko IRIE, Satoshi IMAHASHI, Hiromichi YONEKURA, Takashi KONDO, Maki KINAMI
  • Publication number: 20190013111
    Abstract: The purpose of the present invention is to provide a stretchable conductor that can be used to form a film having good repeated stretching durability, a garment-type election device that has a wire using the stretchable conductor, and a method for producing the same. Conductive particles, preferably silver particles, a predetermined quantity of a specific barium sulfate, and a flexible resin component are mixed together to obtain a stretchable conductor composition. A sheet made from the stretchable conductor composition thus obtained has a low initial conductivity, and a high conductivity retention rate when repeatedly stretched. By cutting the stretchable conductor composition into a predetermined shape and affixing the composition to fabric or the like that constitutes a garment, it is possible to achieve a garment-type device having electrical wiring with high stretchability.
    Type: Application
    Filed: January 10, 2017
    Publication date: January 10, 2019
    Applicant: TOYOBO CO., LTD.
    Inventors: Hiromichi YONEKURA, Satoshi IMAHASHI, Michihiko IRIE, Takashi KONDO, Maki KINAMI
  • Patent number: 10119045
    Abstract: The present invention provides an electroconductive paste which is excellent in a stability upon storage for a long period and in an anti-migration property, and capable of forming electrodes, wirings and sheets having a low resistance, an extensibility and a repetitive stretchability. An electroconductive silver paste, characterized in that, it contains a silver powder (A) and a rubber (B) containing a nitrile group, that a ratio by weight of (A)/(B) is within a range of from 77/23 to 90/10, that the silver powder (A) is an amorphous aggregated powder and/or a flaky powder, and that a content of an alkali metal in the nitrile group-containing rubber (B) is 4,000 ppm or less.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: November 6, 2018
    Assignee: TOYOBO CO., LTD.
    Inventors: Takashi Kondo, Hiromichi Yonekura, Satoshi Imahashi, Maki Kinami
  • Publication number: 20180022951
    Abstract: The present invention provides an electroconductive paste which is excellent in a stability upon storage for a long period and in an anti-migration property, and capable of forming electrodes, wirings and sheets having a low resistance, an extensibility and a repetitive stretchability. An electroconductive silver paste, characterized in that, it contains a silver powder (A) and a rubber (B) containing a nitrile group, that a ratio by weight of (A)/(B) is within a range of from 77/23 to 90/10, that the silver powder (A) is an amorphous aggregated powder and/or a flaky powder, and that a content of an alkali metal in the nitrile group-containing rubber (B) is 4,000 ppm or less.
    Type: Application
    Filed: January 13, 2016
    Publication date: January 25, 2018
    Applicant: TOYOBO CO., LTD.
    Inventors: Takashi KONDO, Hiromichi YONEKURA, Satoshi IMAHASHI, Maki KINAMI
  • Publication number: 20140216285
    Abstract: The present invention provides a water-developable laminate of photosensitive resin for letterpress printing original plate by which finer pattern can be reproduced excellently upon making a plate and printing. The flexographic printing original plate being developable by water according to the present invention is characterized in that at least a support, a photosensitive resin layer containing 25% by mass or more of latex having gelation degree of 55% or more and an adhesion-preventing layer are successively laminated, and that the adhesion-preventing layer contains a cellulose derivative. The water-developable laminate of photosensitive resin according to the present invention is characterized in that at least a support, an adhesive layer, a photosensitive resin layer containing a water-soluble polymer compound and an adhesion-preventing layer are successively laminated, and that the adhesion-preventing layer contains a cellulose derivative.
    Type: Application
    Filed: August 22, 2012
    Publication date: August 7, 2014
    Applicant: TOYOBO CO., LTD.
    Inventors: Kazuya Yoshimoto, Tetsuma Kawakami, Hiromichi Yonekura, Satoshi Takahashi