Patents by Inventor Rikiya Yamashita

Rikiya Yamashita 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: 20240170716
    Abstract: A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order. The battery packaging material satisfies the relationships of: (A1?A2)?60 N/15 mm; and (B1?B2)?50 N/15 mm A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer.
    Type: Application
    Filed: January 24, 2024
    Publication date: May 23, 2024
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko TAKAHAGI, Rikiya YAMASHITA, Daisuke YASUDA
  • Patent number: 11949120
    Abstract: A battery includes a battery element, a housing body, and a valve device. The housing body is constituted by at least one laminate including at least a base material layer, a barrier layer, and a heat-sealable resin layer layered in that order and houses the battery element. The valve device is in communication with the inside of the housing body. A joined edge portion in which the mutually facing heat-sealable resin layers are fused together is formed in a peripheral edge portion of the housing body. The valve device includes a first portion and a second portion. A valve mechanism configured to reduce the internal pressure of the housing body if the internal pressure is increased due to gas generated in the housing body is formed in the first portion. An air passage configured to guide gas generated in the housing body toward the valve mechanism is formed in the second portion. The first portion is located on an outer side of an edge of the joined edge portion.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 2, 2024
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Youichi Mochizuki, Atsuko Takahagi, Rikiya Yamashita, Miho Sasaki
  • Patent number: 11949118
    Abstract: A battery includes a battery element, a housing body, and a valve device. The housing body houses the battery element. The valve device is in communication with the inside of the housing body. Heat-sealable resin layers face each other in a peripheral edge portion of the housing body. A joined edge portion in which the mutually facing heat-sealable resin layers are fused together is formed in the peripheral edge portion of the housing body. The valve device is configured to reduce an internal pressure of the housing body if the internal pressure is increased due to gas generated in the housing body. The valve device includes a first portion that is located on an outer side of an edge of the joined edge portion and a second portion that is sandwiched between the heat-sealable resin layers in the joined edge portion.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 2, 2024
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Youichi Mochizuki, Atsuko Takahagi, Rikiya Yamashita, Miho Sasaki
  • Publication number: 20240083099
    Abstract: A battery packaging material including a laminate that is provided with a barrier layer, a heat-fusible resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. When the infrared absorption spectrum on the surface of the polyester film in 18 directions at intervals of 10° from 0° to 180° is obtained using the total reflection method of Fourier transform infrared spectroscopy, the ratio (surface orientation degree, Ymax/Ymin) of the maximum value Ymax and the minimum value Ymin of the ratio (Y1340/Y1410) of the absorption peak intensity Y1340 in 1340 cm?1 and the absorption peak intensity Y1410 in 1410 cm?1 in the infrared absorption spectrum is in the range of 1.4-2.7.
    Type: Application
    Filed: November 2, 2023
    Publication date: March 14, 2024
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Daisuke YASUDA, Rikiya YAMASHITA, Takanori YAMASHITA
  • Patent number: 11923500
    Abstract: A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order. The battery packaging material satisfies the relationships of: (A1?A2)?60 N/15 mm; and (B1?B2)?50 N/15 mm. A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer.
    Type: Grant
    Filed: May 8, 2023
    Date of Patent: March 5, 2024
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko Takahagi, Rikiya Yamashita, Daisuke Yasuda
  • Patent number: 11840009
    Abstract: A battery packaging material including a laminate that is provided with a barrier layer, a heat-fusible resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. When the infrared absorption spectrum on the surface of the polyester film in 18 directions at intervals of 10° from 0° to 180° is obtained using the total reflection method of Fourier transform infrared spectroscopy, the ratio (surface orientation degree, Ymax/Ymin) of the maximum value Ymax and the minimum value Ymin of the ratio (Y1340/Y1410) of the absorption peak intensity Y1340 in 1340 cm?1 and the absorption peak intensity Y1410 in 1410 cm?1 in the infrared absorption spectrum is in the range of 1.4-2.7.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: December 12, 2023
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Daisuke Yasuda, Rikiya Yamashita, Takanori Yamashita
  • Publication number: 20230387519
    Abstract: A battery packaging material including a laminate including at least a base material layer, a barrier layer, an adhesive layer, and a heat-sealable resin layer in this order, in which crushing of the adhesive layer is effectively prevented when the heat-sealable resin layer is heat-sealed with itself, and a high sealing strength is achieved in a high-temperature environment. The battery packaging material includes a laminate including at least a base material layer, a barrier layer, an adhesive layer, and a heat-sealable resin layer in this order, wherein the adhesive layer has a logarithmic decrement ?E of 2.0 or less at 120° C. according to rigid-body pendulum measurement.
    Type: Application
    Filed: August 7, 2023
    Publication date: November 30, 2023
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Daisuke YASUDA, Yosuke HAYAKAWA, Kaoru TSUMORI, Takanori YAMASHITA, Rikiya YAMASHITA
  • Publication number: 20230290995
    Abstract: A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order. The battery packaging material satisfies the relationships of: (A1 - A2) ? 60 N/15 mm; and (B1 -B2) ? 50 N/15 mm. A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer.
    Type: Application
    Filed: May 8, 2023
    Publication date: September 14, 2023
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko TAKAHAGI, Rikiya YAMASHITA, Daisuke YASUDA
  • Patent number: 11707880
    Abstract: A technology for improving molding properties while minimizing curling after molding in a battery packaging material comprising a laminate that is provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. This battery packaging material is configured from at least a laminate provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. The birefringence of the polyester film is in the range of 0.016-0.056.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: July 25, 2023
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Daisuke Yasuda, Rikiya Yamashita, Takanori Yamashita
  • Patent number: 11688878
    Abstract: A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order. The battery packaging material satisfies the relationships of: (A1?A2)?60 N/15 mm; and (B1?B2)?50 N/15 mm. A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: June 27, 2023
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko Takahagi, Rikiya Yamashita, Daisuke Yasuda
  • Patent number: 11594771
    Abstract: A battery packaging material that is excellent in electrolytic solution resistance and ink printing characteristics of the surface. A battery packaging material comprising a laminate having at least a protective layer, a base material layer, a barrier layer, and a heat-sealable resin layer in this order, wherein a maximum value A of absorbance detected in an infrared wavenumber range of 2800 to 3000 cm?1 and a maximum value B of absorbance detected in an infrared wavenumber range of 2200 to 2300 cm?1 satisfy the relation: 0.05?B/A?0.75, as measured from an outermost surface of the protective layer, using attenuated total reflection Fourier transform infrared spectroscopy.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: February 28, 2023
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Shunsuke Ueda, Rikiya Yamashita, Daisuke Watanabe
  • Patent number: 11575177
    Abstract: A battery includes a battery element, a housing body, and a valve device. The housing body is constituted by at least one laminate and includes an interior space in which the battery element is housed, a first housing portion that covers the interior space from a first side, and a second housing portion that covers the interior space from a second side. The valve device is attached to the housing body and can make interior space of housing body be in communication with an external space. A joined edge portion is formed in housing body as a result of the first and second housing portion being fused along respective peripheral edge portions. The valve device is sandwiched between the first and second housing portion in the joined edge portion, and an inner end of the valve device protrudes from an inner edge of joined edge portion toward the interior space.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: February 7, 2023
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Youichi Mochizuki, Atsuko Takahagi, Rikiya Yamashita, Miho Sasaki
  • Publication number: 20230024359
    Abstract: Provided is a packaging material for batteries, which has excellent insulating properties. A packaging material for batteries, which is formed of a laminate that is obtained by sequentially laminating at least a base layer, a bonding layer, a metal layer and a sealant layer, and wherein the base layer comprises a resin layer A that is formed of a thermoplastic resin having a volume resistivity of 1×1015 ?·cm or more.
    Type: Application
    Filed: September 12, 2022
    Publication date: January 26, 2023
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Daisuke YASUDA, Atsuko TAKAHAGI, Rikiya YAMASHITA, Shinichiro NAKAMURA
  • Publication number: 20220355585
    Abstract: A method for producing a battery packaging material, the method including a step of obtaining a laminate by laminating at least a base material layer, a barrier layer, a cured resin layer and a heat-sealable resin layer in this order, wherein at least one layer of the base material layer is formed of a polybutylene terephthalate film, and a value determined by dividing a piercing strength X (N) in the case of piercing the laminate from its base material layer side measured by a method in accordance with a provision of JIS Z1707:1997 by a thickness Y (?m) of the polybutylene terephthalate film is 1.02 N/?m or more.
    Type: Application
    Filed: July 13, 2022
    Publication date: November 10, 2022
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kenta HIRAKI, Atsuko TAKAHAGI, Rikiya YAMASHITA
  • Patent number: 11476524
    Abstract: Provided is a packaging material for batteries, which has excellent insulating properties. A packaging material for batteries, which is formed of a laminate that is obtained by sequentially laminating at least a base layer, a bonding layer, a metal layer and a sealant layer, and wherein the base layer comprises a resin layer A that is formed of a thermoplastic resin having a volume resistivity of 1×1015 ?·cm or more.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 18, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Daisuke Yasuda, Atsuko Takahagi, Rikiya Yamashita, Shinichiro Nakamura
  • Publication number: 20220281156
    Abstract: A technology for improving molding properties while minimizing curling after molding in a battery packaging material comprising a laminate that is provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. This battery packaging material is configured from at least a laminate provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. The birefringence of the polyester film is in the range of 0.016-0.056.
    Type: Application
    Filed: May 20, 2022
    Publication date: September 8, 2022
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Daisuke YASUDA, Rikiya YAMASHITA, Takanori YAMASHITA
  • Patent number: 11426986
    Abstract: A packaging material for batteries, which is not susceptible to warping, while having excellent formability. A packaging material for batteries is configured from a laminate that is sequentially provided at least with one or more substrate layers, a barrier layer, a cured resin layer and a thermally fusible resin layer in this order. At least one of the substrate layers is formed of a polybutylene terephthalate film; and the value (X/Y) which is obtained by dividing the puncture strength X (N) of the laminate by the thickness Y (?m) of the polybutylene terephthalate film, the puncture strength X (N) being determined by piercing the laminate from the substrate layer side by a method that complies with the prescription of JIS Z1707 (1997), is 1.02 N/?m or more.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: August 30, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kenta Hiraki, Atsuko Takahagi, Rikiya Yamashita
  • Patent number: 11370160
    Abstract: A technology for improving molding properties while minimizing curling after molding in a battery packaging material comprising a laminate that is provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. This battery packaging material is configured from at least a laminate provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. The birefringence of the polyester film is in the range of 0.016-0.056.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 28, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Daisuke Yasuda, Rikiya Yamashita, Takanori Yamashita
  • Publication number: 20220123392
    Abstract: A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order. The battery packaging material satisfies the relationships of: (A1?A2)?60 N/15 mm; and (B1?B2)?50 N/15 mm. A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer.
    Type: Application
    Filed: December 27, 2021
    Publication date: April 21, 2022
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko TAKAHAGI, Rikiya YAMASHITA, Daisuke YASUDA
  • Patent number: 11251481
    Abstract: A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order. The battery packaging material satisfies the relationships of: (A1?A2)?60 N/15 mm; and (B1?B2)?50 N/15 mm. A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: February 15, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko Takahagi, Rikiya Yamashita, Daisuke Yasuda