Patents by Inventor Kuniyuki Saito

Kuniyuki Saito 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).

  • Positive electrode mixture for nonaqueous battery and positive electrode structure
    Patent number: 9236612
    Abstract: A positive electrode mixture for nonaqueous batteries, is formed by adding 0.5 to 10 wt. parts of an organic acid per 100 wt. parts of an electroconductive additive, to a mixture of a composite metal oxide as a positive electrode active substance, a higher order-structured carbon black as the electroconductive additive, a binder of a fluorine-containing copolymer of at least three comonomers including vinylidene fluoride, tetrafluoroethylene and a flexibility-improving fluorine-containing monomer, and an organic solvent. Further, the mixture is applied on at least one side of an electroconductive sheet, and then dried and compressed to form a positive electrode mixture layer. As a result, it is possible to provide a positive electrode structure having a thick and sound positive electrode mixture layer of a high energy density.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: January 12, 2016
    Assignee: KUREHA CORPORATION
    Inventors: Tamito Igarashi, Kuniyuki Saito, Mitsuyasu Sakuma
  • Positive Electrode Mixture for Nonaqueous Battery and Positive Electrode Structure
    Publication number: 20100266882
    Abstract: A positive electrode mixture for nonaqueous batteries, is formed by adding 0.5 to 10 wt. parts of an organic acid per 100 wt. parts of an electroconductive additive, to a mixture of a composite metal oxide as a positive electrode active substance, a higher order-structured carbon black as the electroconductive additive, a binder of a fluorine-containing copolymer of at least three comonomers including vinylidene fluoride, tetrafluoroethylene and a flexibility-improving fluorine-containing monomer, and an organic solvent. Further, the mixture is applied on at least one side of an electroconductive sheet, and then dried and compressed to form a positive electrode mixture layer. As a result, it is possible to provide a positive electrode structure having a thick and sound positive electrode mixture layer of a high energy density.
    Type: Application
    Filed: November 12, 2008
    Publication date: October 21, 2010
    Applicant: Kureha Corporation
    Inventors: Tamito Igarashi, Kuniyuki Saito, Mitsuyasu Sakuma