Patents by Inventor Nobuo Ahiko

Nobuo Ahiko 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: 8642210
    Abstract: A negative electrode mixture for nonaqueous electrolyte secondary batteries that can form a mixture layer showing excellent peel strength with a collector in the manufacturing of negative electrodes for nonaqueous electrolyte secondary batteries is provided. The negative electrode mixture for nonaqueous electrolyte secondary batteries includes at least one inorganic substance selected from hydrogen chloride, hydrogen bromide, sulfuric acid and inorganic salts represented by Formula (A) below, an electrode active material, a polar group-containing vinylidene fluoride polymer and an organic solvent, the inorganic substance being contained at 10 to 500 ppm based on 100 wt % of the electrode active material; MX . . . (A), wherein M is an alkali metal, and X is Cl or Br.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: February 4, 2014
    Inventors: Mitsuyasu Sakuma, Ayaka Igarashi, Nobuo Ahiko
  • Publication number: 20110177390
    Abstract: A negative electrode mixture for nonaqueous electrolyte secondary batteries that can form a mixture layer showing excellent peel strength with a collector in the manufacturing of negative electrodes for nonaqueous electrolyte secondary batteries is provided. The negative electrode mixture for nonaqueous electrolyte secondary batteries includes at least one inorganic substance selected from hydrogen chloride, hydrogen bromide, sulfuric acid and inorganic salts represented by Formula (A) below, an electrode active material, a polar group-containing vinylidene fluoride polymer and an organic solvent, the inorganic substance being contained at 10 to 500 ppm based on 100 wt % of the electrode active material; MX . . . (A), wherein M is an alkali metal, and X is Cl or Br.
    Type: Application
    Filed: August 13, 2009
    Publication date: July 21, 2011
    Applicant: KUREHA CORPORATION
    Inventors: Mitsuyasu Sakuma, Ayaka Igarashi, Nobuo Ahiko
  • Patent number: 7851084
    Abstract: A core/shell polymer (A), comprising: a rubbery core comprising a crosslinked vinylidene fluoride copolymer (a) having a vinylidene fluoride content of 30-90 wt. % and a shell comprising a vinylidene fluoride polymer (b) having a vinylidene fluoride content which is larger than in the crosslinked vinylidene fluoride copolymer (a) and at least 80 wt. %, in a weight ratio (a)/(b) of 30/70-90/10. The vinylidene fluoride-based core/shell polymer (A) is excellent in mechanical properties including flexibility and resistance to nonaqueous electrolytic solutions, is capable of forming a composite electrode layer showing excellent flexibility and adhesion to an electroconductive substrate in combination with a powder active substance and is therefore suitable for use as a binder for nonaqueous electrochemical devices.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: December 14, 2010
    Assignee: Kureha Corporation
    Inventors: Mitsuyasu Sakuma, Tamito Igarashi, Aisaku Nagai, Nobuo Ahiko, Mayumi Sugahara
  • Publication number: 20080131776
    Abstract: A core/shell polymer (A), comprising: a rubbery core comprising a crosslinked vinylidene fluoride copolymer (a) having a vinylidene fluoride content of 30-90 wt. % and a shell comprising a vinylidene fluoride polymer (b) having a vinylidene fluoride content which is larger than in the crosslinked vinylidene fluoride copolymer (a) and at least 80 wt. %, in a weight ratio (a)/(b) of 30/70-90/10. The vinylidene fluoride-based core/shell polymer (A) is excellent in mechanical properties including flexibility and resistance to nonaqueous electrolytic solutions, is capable of forming a composite electrode layer showing excellent flexibility and adhesion to an electroconductive substrate in combination with a powder active substance and is therefore suitable for use as a binder for nonaqueous electrochemical devices.
    Type: Application
    Filed: January 20, 2006
    Publication date: June 5, 2008
    Inventors: Mitsuyasu Sakuma, Tamito Igarashi, Aisaku Nagai, Nobuo Ahiko, Mayumi Sugahara
  • Patent number: 4696856
    Abstract: Disclosed herein is a pressure-sensitive recording material including such a sheet excellent in the durability and definition of the recorded images transcribed on another sheet, which is produced by the process comprising the step of applying the microcapsules encapsulating minute particles of a pigment dispersed in a solution of an adhesive and optionally, an oil-soluble colored dyestuff dissolved in the solvent onto a supporting material such as sheet, and a process for producing the same.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: September 29, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshio Okada, Nobuo Ahiko, Yuriko Igarashi
  • Patent number: 4654251
    Abstract: Disclosed herein is a printing material set for preparing bar-code labels by pressure-sensitive printing method comprising (a) a printing tape of a film carrying on the inside surface thereof the microcapsules containing the minute particles of a pigment dispersed in a solution of an adhesive component dissolved in an organic solvent as a core material, and (b) a bar-code label tape comprising bar-code label papers having an adhesive on the undersurface thereof and a stripping tape carrying the bar-code label papers and being removably attached to the adhesive, the printing tape being superposed on the bar-code label tape, the microcapsules facing the uppersurface of the bar-code label tape.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: March 31, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshio Okada, Nobuo Ahiko, Yuriko Igarashi
  • Patent number: 4330439
    Abstract: The electric device according to the present invention has as its constituents the insulating materials and elements comprising films of synthetic resin, for instance, polypropylene, impregnated with 1-phenyl-2-ethylphenylethane and/or 1-phenyl-2-isopropylphenylethane.According to the present invention, insulating oils having favorable compatibility with the film of synthetic resin such as polypropylene and favorable affinity to metals and having low viscosity have been provided, and in addition, electric devices excellent in properties of withstanding a high voltage and dielectric properties in a broad range of temperature from a low temperature to a high temperature have also been offered.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: May 18, 1982
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Nissin Electric Co., Ltd.
    Inventors: Mineaki Nishimatsu, Sadayoshi Mukai, Yoshinori Hayashi, Osamu Yamaguchi, Akira Ito, Nobuo Ahiko