Patents by Inventor Kazuhiko Yokota

Kazuhiko Yokota 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: 20230344041
    Abstract: A power storage device packaging material includes a laminate having at least a base material layer, a barrier layer, and a heat-sealable resin layer sequentially from an outer side, wherein the base material layer includes a polyester film and a polyamide film, the polyester film has a thickness of 10 ?m or more and 14 ?m or less, and the polyamide film has a thickness of 18 ?m or more and 22 ?m or less.
    Type: Application
    Filed: November 24, 2021
    Publication date: October 26, 2023
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Makoto AMANO, Daisuke YASUDA, Masahiro TATSUZAWA, Kazuhiko YOKOTA, Takanori YAMASHITA, Yasuaki MUTOU, Jun KAGEYAMA, Hironori KAMIJO
  • Patent number: 11040332
    Abstract: Provided are: a complex oxide that exhibits high redox ability even at low temperatures, has excellent heat resistance, and stably retains these characteristics even on repeated oxidation and reduction at high temperature; a method for producing the same; and an exhaust gas purification catalyst. The inventive complex oxide contains more than 0 but no more than 20 parts by mass of Si, calculated as SiO2, per total 100 parts by mass of rare earth metal elements including Ce, calculated as oxides; and has a characteristic such that when it is subjected to temperature-programmed reduction (TPR) measurement in a 10% hydrogen-90% argon atmosphere at from 50° C. to 900° C. with the temperature increasing at a rate of 10° C./min, followed by oxidation treatment at 500° C. for 0.5 hours, and then temperature-programmed reduction measurement is performed again, its calculated reduction rate at and below 400° C. is at least 1.5%.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: June 22, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Naotaka Ohtake, Keiichiro Mitsuoka, Kazuhiko Yokota
  • Patent number: 10886506
    Abstract: Provided is a cell packaging material having a high insulating performance and durability. A cell packaging material comprising a layered body provided with at least a substrate layer, a metal layer, an adhesive layer, and a heat-fusible resin layer in the stated order. The adhesive layer has a resin composition that contains an acid-modified polyolefin and an epoxy resin. In probe displacement amount measurements involving the use of a thermal mechanical analyzer, when a probe is placed on the surface of the adhesive layer at an end part of the cell packaging material and the probe is heated from 40° C. to 220° C., the position of the probe does not drop in relation to the initial value.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: January 5, 2021
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kaoru Miyazaki, Hirotoshi Sakamoto, Yousuke Hayakawa, Rikiya Yamashita, Takanori Yamashita, Tsuyoshi Suzuki, Yoichi Mochizuki, Kazuhiko Yokota, Tetsuya Ojiri
  • Patent number: 10854396
    Abstract: A packaging material for electrochemical cells, which has insulating properties sufficient for preventing a short circuit, while exhibiting excellent electrolyte solution resistance and water vapor barrier properties. A packaging material for electrochemical cells is obtained by sequentially laminating a metal layer, an adhesive resin layer and a thermally adhesive resin layer in this order, wherein: a base coating layer is provided between the metal layer and the adhesive resin layer; and the base coating layer contains at least a zirconium oxide (A) having an average particle diameter within the range of from 1 nm to 500 nm (inclusive), one or more phosphorus-containing compounds (B) selected from the group of phosphorus compounds having 4 or more phosphonic groups in each molecule, and an acid-modified polyolefin resin (C).
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: December 1, 2020
    Assignees: DAI NIPPON PRINTING CO., LTD., NIHON PARKERIZING CO., LTD.
    Inventors: Kazuhiko Yokota, Rikiya Yamashita, Yasuhiko Nagashima
  • Patent number: 10777785
    Abstract: A battery packaging material includes a laminate that includes at least a base material layer, a metal layer, an insulating layer, and a sealant layer laminated in this order. The insulating layer is formed of a resin composition containing a modified polyolefin resin modified with an unsaturated carboxylic acid or acid anhydride thereof and has a hardness, when measured by using a nanoindenter and pressing an indenter 5 ?m into the insulating layer from a cross-section of the laminate in the laminating direction thereof, that ranges from 10 MPa to 300 MPa. In the sealant layer, an elastic modulus, when measured by using a nanoindenter and pressing an indenter 5 ?m into the sealant layer from a cross-section of the laminate in the laminating direction thereof, ranges from 100 MPa to 1000 MPa.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: September 15, 2020
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Tetsuya Ojiri, Tsuyoshi Suzuki, Kazuhiko Yokota, Rikiya Yamashita, Masakazu Kandori
  • Patent number: 10673030
    Abstract: Provided is an electrochemical cell packaging material with excellent electrolyte resistance. An electrochemical cell packaging material includes the following in a laminated structure: a substrate layer that, at a minimum, includes resin film; a protective layer that is arranged as the outermost layer and protects the substrate layer; a thermal adhesion layer that is arranged as the innermost layer and which includes thermal adhesion resin; and a barrier layer that includes metal foil and is arranged between the substrate layer and the thermal adhesion layer. The protective layer is formed of an epoxy resin that has bisphenol A or bisphenol F as an element in the backbone.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 2, 2020
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hirohisa Akita, Masataka Okushita, Daisuke Watanabe, Kazuhiko Yokota
  • Patent number: 10610852
    Abstract: Provided are: a complex oxide that exhibits high redox ability even at low temperatures, has excellent heat resistance, and stably retains these characteristics even on repeated oxidation and reduction at high temperature; a method for producing the same; and an exhaust gas purification catalyst. The inventive complex oxide contains Ce; rare earth metal element other than Ce, including Y; Al and/or Zr; and Si; such that the Ce, and said other elements other than Ce and Si, are present in a mass ratio of 85:15-99:1, calculated as oxides; and has a characteristic such that when it is subjected to temperature-programmed reduction (TPR) measurement in a 10% hydrogen-90% argon atmosphere at from 50° C. to 900° C. with the temperature increasing at a rate of 10° C./min, followed by oxidation treatment at 500° C. for 0.5 hours, and then temperature-programmed reduction measurement is performed again, its calculated reduction rate at and below 400° C. is at least 2.0%.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: April 7, 2020
    Assignee: RHODIA OPERATIONS
    Inventors: Naotaka Ohtake, Keiichiro Mitsuoka, Kazuhiko Yokota
  • Patent number: 10614962
    Abstract: Provided is a packaging material for an electrochemical cell which prevents the occurrence of short circuits. A packaging material for an electrochemical cell configured by laminating a base material layer including: at least a resin film; a heat-adhesive layer including a heat-adhesive resin, the heat-adhesive layer being disposed on the innermost layer; and a barrier layer including a metal foil, the barrier layer being disposed between the base material layer and the heat-adhesive layer, wherein a chemical-conversion-treated layer including alumina particles and modified epoxy resin is formed on the surface of at least the heat adhesive layer side of the barrier layer.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: April 7, 2020
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hirohisa Akita, Makoto Amano, Kazuhiko Yokota, Rikiya Yamashita
  • Patent number: 10347877
    Abstract: Presented is battery packaging material which is made of a laminate including, as the essentials, a base material layer, a metal layer and a sealant layer in this order. When a product obtained by packaging a battery element with the packaging material in a hermetically sealed state through heat sealing is heated, the packaging material delaminates at least at a part of the interface between the metal layer and the outside surface of the sealant layer with the hermetically sealed state being kept, and thereafter works so as to make the product unsealed.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: July 9, 2019
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hiroki Douke, Yoshihiro Shinohara, Tsuyoshi Suzuki, Rikiya Yamashita, Kazuhiko Yokota, Masakazu Kandori, Yaichiro Hori, Tetsuya Ojiri
  • Publication number: 20190180951
    Abstract: A packaging material for electrochemical cells, which has insulating properties sufficient for preventing a short circuit, while exhibiting excellent electrolyte solution resistance and water vapor barrier properties. A packaging material for electrochemical cells is obtained by sequentially laminating a metal layer, an adhesive resin layer and a thermally adhesive resin layer in this order, wherein: a base coating layer is provided between the metal layer and the adhesive resin layer; and the base coating layer contains at least a zirconium oxide (A) having an average particle diameter within the range of from 1 nm to 500 nm (inclusive), one or more phosphorus-containing compounds (B) selected from the group of phosphorus compounds having 4 or more phosphonic groups in each molecule, and an acid-modified polyolefin resin (C).
    Type: Application
    Filed: March 21, 2017
    Publication date: June 13, 2019
    Applicants: DAI NIPPON PRINTING CO., LTD., NIHON PARKERIZING CO., LTD.
    Inventors: Kazuhiko YOKOTA, Rikiya YAMASHITA, Yasuhiko NAGASHIMA
  • Publication number: 20190157633
    Abstract: A battery packaging material includes a laminate that includes at least a base material layer, a metal layer, an insulating layer, and a sealant layer laminated in this order. The insulating layer is formed of a resin composition containing a modified polyolefin resin modified with an unsaturated carboxylic acid or acid anhydride thereof and has a hardness, when measured by using a nanoindenter and pressing an indenter 5 ?m into the insulating layer from a cross-section of the laminate in the laminating direction thereof, that ranges from 10 MPa to 300 MPa. In the sealant layer, an elastic modulus, when measured by using a nanoindenter and pressing an indenter 5 ?m into the sealant layer from a cross-section of the laminate in the laminating direction thereof, ranges from 100 MPa to 1000 MPa.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Tetsuya OJIRI, Tsuyoshi SUZUKI, Kazuhiko YOKOTA, Rikiya YAMASHITA, Masakazu KANDORI
  • Patent number: 10236479
    Abstract: A power-cell packaging material including a layered body obtained by layering at least a substrate layer, a metal layer, an insulating layer, and a sealant layer, in this order. The insulating layer has a hardness in the range of 10-300 MPa, when measured by using a nanoindenter and pressing the indenter 5 ?m into the insulating layer from a cross-section of the layered body in the layering direction thereof.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: March 19, 2019
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Tetsuya Ojiri, Tsuyoshi Suzuki, Kazuhiko Yokota, Rikiya Yamashita, Masakazu Kandori
  • Patent number: 10177350
    Abstract: Provided is a packaging material for electrochemical cells which has an identification mark that can be recognized from the outside and that is difficult to forge. The packaging material comprises a multilayer film which has a structure formed by laminating a base layer (11), an adhesive layer (13), a metal foil layer (12), an acid-modified polyolefin layer (14), and a heat-sealable layer (15) in this order, wherein the base layer (11) comprises both a oriented polyester film (11b) and a oriented nylon film (11e) with a printed layer (11c) provided on the surface of the oriented polyester film (11b) that faces the oriented nylon film (11e).
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: January 8, 2019
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hirohisa Akita, Youichi Mochizuki, Kazuhiko Yokota
  • Publication number: 20180090724
    Abstract: Provided is a cell packaging material having a high insulating performance and durability. A cell packaging material comprising a layered body provided with at least a substrate layer, a metal layer, an adhesive layer, and a heat-fusible resin layer in the stated order. The adhesive layer has a resin composition that contains an acid-modified polyolefin and an epoxy resin. In probe displacement amount measurements involving the use of a thermal mechanical analyzer, when a probe is placed on the surface of the adhesive layer at an end part of the cell packaging material and the probe is heated from 40° C. to 220° C., the position of the probe does not drop in relation to the initial value.
    Type: Application
    Filed: March 30, 2016
    Publication date: March 29, 2018
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kaoru MIYAZAKI, Hirotoshi SAKAMOTO, Yousuke HAYAKAWA, Rikiya YAMASHITA, Takanori YAMASHITA, Tsuyoshi SUZUKI, Yoichi MOCHIZUKI, Kazuhiko YOKOTA, Tetsuya OJIRI
  • Patent number: 9901906
    Abstract: Disclosed are a composite oxide which is capable of maintaining a large specific surface area even used in a high temperature environment, and which has excellent heat resistance and reducibility, as well as a method for producing the composite oxide and a catalyst for exhaust gas purification employing the composite oxide. The composite oxide contains cerium and at least one of rare earth metal elements other than cerium and including yttrium, at a mass ratio of 85:15 to 99:1 in terms oxides, and further containing silicon at more than 0 parts by mass and not more than 20 parts by mass in terms of SiO2 with respect to 100 parts by mass of the total of the cerium and the at least one of rare earth metal elements other than cerium and including yttrium, wherein the composite oxide has a specific surface area of not less than 40 m2/g as measured by the BET method after calcination at 900° C.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: February 27, 2018
    Assignee: SOLVAY SPECIAL CHEM JAPAN, LTD.
    Inventors: Naotaka Ohtake, Kazuhiko Yokota
  • Publication number: 20180040861
    Abstract: Provided is a packaging material for electrochemical cells which has an identification mark that can be recognized from the outside and that is difficult to forge. The packaging material comprises a multilayer film which has a structure formed by laminating a base layer (11), an adhesive layer (13), a metal foil layer (12), an acid-modified polyolefin layer (14), and a heat-sealable layer (15) in this order, wherein the base layer (11) comprises both a oriented polyester film (11b) and a oriented nylon film (11e) with a printed layer (11c) provided on the surface of the oriented polyester film (11b) that faces the oriented nylon film (11e).
    Type: Application
    Filed: October 20, 2017
    Publication date: February 8, 2018
    Inventors: Hirohisa AKITA, Youichi MOCHIZUKI, Kazuhiko YOKOTA
  • Publication number: 20180001303
    Abstract: Disclosed are a composite oxide which is capable of maintaining a large volume of pores even used in a high temperature environment, and which has excellent heat resistance and catalytic activity, as well as a method for producing the composite oxide and a catalyst for exhaust gas purification employing the composite oxide. The composite oxide contains cerium and at least one element selected from aluminum, silicon, or rare earth metals other than cerium and including yttrium, at a mass ratio of 85:15 to 99:1 in terms oxides, and has a property of exhibiting a not less than 0.30 cm3/g, preferably not less than 0.40 cm3/g volume of pores with a diameter of not larger than 200 nm, after calcination at 900° C. for 5 hours, and is suitable for a co-catalyst in a catalyst for vehicle exhaust gas purification.
    Type: Application
    Filed: August 18, 2017
    Publication date: January 4, 2018
    Applicant: SOLVAY SPECIAL CHEM JAPAN, LTD.
    Inventors: Naotaka OHTAKE, Kazuhiko YOKOTA
  • Patent number: 9831476
    Abstract: This packaging material for electrochemical cells has an identification mark that can be recognized from the outside and that is difficult to forge. The packaging material includes a multilayer film which has a structure formed by laminating a base layer (11), an adhesive layer (13), a metal foil layer (12), an acid-modified polyolefin layer (14), and a heat-sealable layer (15) in this order, wherein the base layer (11) contains both a oriented polyester film (11b) and a oriented nylon film (11e) with a printed layer (11c) provided on the surface of the oriented polyester film (11b) that faces the oriented nylon film (11e).
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: November 28, 2017
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hirohisa Akita, Youichi Mochizuki, Kazuhiko Yokota
  • Patent number: 9806303
    Abstract: Provided is a packaging material for electrochemical cells which has an identification mark that can be recognized from the outside and that is difficult to forge. The packaging material comprises a multilayer film which has a structure formed by laminating a base layer (11), an adhesive layer (13), a metal foil layer (12), an acid-modified polyolefin layer (14), and a heat-sealable layer (15) in this order, wherein the base layer (11) comprises both a oriented polyester film (11b) and a oriented nylon film (11e) with a printed layer (11c) provided on the surface of the oriented polyester film (11b) that faces the oriented nylon film (11e).
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: October 31, 2017
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hirohisa Akita, Youichi Mochizuki, Kazuhiko Yokota
  • Patent number: 9757711
    Abstract: Disclosed are a composite oxide which is capable of maintaining a large volume of pores even used in a high temperature environment, and which has excellent heat resistance and catalytic activity, as well as a method for producing the composite oxide and a catalyst for exhaust gas purification employing the composite oxide. The composite oxide contains cerium and at least one element selected from aluminum, silicon, or rare earth metals other than cerium and including yttrium, at a mass ratio of 85:15 to 99:1 in terms oxides, and has a property of exhibiting a not less than 0.30 cm3/g, preferably not less than 0.40 cm3/g volume of pores with a diameter of not larger than 200 nm, after calcination at 900° C. for 5 hours, and is suitable for a co-catalyst in a catalyst for vehicle exhaust gas purification.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: September 12, 2017
    Assignee: SOLVAY SPECIAL CHEM JAPAN, LTD.
    Inventors: Naotaka Ohtake, Kazuhiko Yokota