Patents by Inventor Akihito SHIGEMATSU

Akihito SHIGEMATSU 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: 9941517
    Abstract: Provided are an electrode for a lithium battery that is capable of providing a lithium battery having both high stability and high battery properties; a process for producing an electrode for a lithium battery, in which a positive electrode plate and/or a negative electrode plate, even when coated with a thermal activation material dissolved in an organic solvent such as a pyrrolidone-based solvent, is prevented from swelling; and a lithium battery including said electrode for a lithium battery. The electrode for a lithium battery includes an electrode plate, a mix layer and a heat insulating layer in this order, wherein the mix layer includes at least an aqueous adhesive and an active material; the heat insulating layer includes at least a thermal activation material; and at least part of the mix layer is in contact with at least part of the heat insulating layer.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: April 10, 2018
    Assignees: MITSUI CHEMICALS, INC., INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Akihito Shigematsu, Gen Miyata, Jung-Mu Hsu, Chang-Rung Yang, Jing-Pin Pan
  • Publication number: 20170346127
    Abstract: A lithium secondary battery including: a positive electrode which contains a positive electrode active material capable of absorbing and desorbing lithium; a negative electrode which contains a negative electrode active material capable of absorbing and desorbing lithium; and a non-aqueous electrolytic solution, wherein at least one of the positive electrode or the negative electrode contains a polymer that is a reaction product of a defined compound (A) and a defined compound (B) which is different from compound (A), and the non-aqueous electrolytic solution contains an additive (X). The additive (X) is at least one compound selected from the group consisting of: a carbonate compound having a carbon-carbon unsaturated bond, a carbonate compound having a halogen atom, an alkali metal salt, a sulfonic acid ester compound, a sulfuric acid ester compound, a nitrile compound, a dioxane compound, and a substituted aromatic hydrocarbon compound.
    Type: Application
    Filed: October 22, 2015
    Publication date: November 30, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Han ZHANG, Ayumi KOISO, Akihito SHIGEMATSU, Yu IIMURO, Keita NAGAKAWA, Mitsuaki CHIDA, Takaomi HAYASHI, Hitoshi ONISHI, Masataka MIYASATO, Satoko FUJIYAMA
  • Publication number: 20170309971
    Abstract: An electrode for a lithium battery, containing a current collector (A) and a mixture layer (B) contacting the current collector (A) and including an active material (a), an organic solvent binder (b), a conduction assistant (c) comprising carbon black in which an average particle diameter of a primary particle is 1 ?m or less, and a nitrogen-containing polymer (d).
    Type: Application
    Filed: September 30, 2015
    Publication date: October 26, 2017
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Han ZHANG, Ayumi KOISO, Akihito SHIGEMATSU, Yu IIMURO, Keita NAGAKAWA, Mitsuaki CHIDA, Takaomi HAYASHI, Hitoshi ONISHI, Masataka MIYASATO, Satoko FUJIYAMA
  • Publication number: 20150372307
    Abstract: Provided are an electrode for a lithium battery that is capable of providing a lithium battery having both high stability and high battery properties; a process for producing an electrode for a lithium battery, in which a positive electrode plate and/or a negative electrode plate, even when coated with a thermal activation material dissolved in an organic solvent such as a pyrrolidone-based solvent, is prevented from swelling; and a lithium battery including said electrode for a lithium battery. The electrode for a lithium battery includes an electrode plate, a mix layer and a heat insulating layer in this order, wherein the mix layer includes at least an aqueous adhesive and an active material; the heat insulating layer includes at least a thermal activation material; and at least part of the mix layer is in contact with at least part of the heat insulating layer.
    Type: Application
    Filed: January 28, 2014
    Publication date: December 24, 2015
    Applicants: Mitsui Chemicals, Inc., Industrial Technology Research Institute
    Inventors: Akihito SHIGEMATSU, Gen MIYATA, Jung-Mu HSU, Chang-Rung YANG, Jing-Pin PAN