Patents by Inventor Takuma NAGAHAMA

Takuma NAGAHAMA 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: 11670777
    Abstract: The present invention provides a thin film forming composition for energy storage device electrodes, said composition containing a conductive carbon material, a dispersant, a solvent and a polymer that has a partial structure represented by formula (P1) in a side chain. (In the formula, L represents —O— or —NH—; R represents an alkylene group having from 1 to 20 carbon atoms; T represents a substituted or unsubstituted amino group, a nitrogen-containing heteroaryl group having from 2 to 20 carbon atoms or a nitrogen-containing aliphatic heterocyclic group having from 2 to 20 carbon atoms; and * represents a bonding hand.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: June 6, 2023
    Assignee: NISSAN CHEMICAL CORPORATION
    Inventors: Mari Yajima, Takuma Nagahama, Takahiro Kaseyama
  • Publication number: 20230100064
    Abstract: This invention provides a carbon nanotube dispersion that contains carbon nanotubes, a dispersant, a solvent, and a polymer which has a partial structure represented by formula (P1) on a side chain. (In the formula, L represents —O— or —NH—, R represents an alkylene group having 1-20 carbon atoms, T represents a substituted or unsubstituted amino group, a nitrogen-containing heteroaryl group having 2-20 carbon atoms, or a nitrogen-containing aliphatic heterocyclic group having 2-20 carbon atoms, and * represents a bond.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 30, 2023
    Applicant: NISSAN CHEMICAL CORPORATION
    Inventors: Takuma NAGAHAMA, Mari YAJIMA, Yuta KEMMIZAKI
  • Publication number: 20230099896
    Abstract: The present invention provides a thin film forming composition for energy storage device electrodes, said composition containing a conductive carbon material, a dispersant, a solvent and a polymer that has a partial structure represented by formula (P1) in a side chain. (In the formula, L represents —O— or —NH—; R represents an alkylene group having from 1 to 20 carbon atoms; T represents a substituted or unsubstituted amino group, a nitrogen-containing heteroaryl group having from 2 to 20 carbon atoms or a nitrogen-containing aliphatic heterocyclic group having from 2 to 20 carbon atoms; and * represents a bonding hand.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 30, 2023
    Applicant: Nissan Chemical Corporation
    Inventors: Mari YAJIMA, Takuma NAGAHAMA, Takahiro KASEYAMA
  • Publication number: 20220158077
    Abstract: The present invention provides a composition for forming a polyvinylidene fluoride film, which contains: a polyvinylidene fluoride; at least one surfactant that is selected from among sulfuric acid-based surfactants, sulfonic acid-based surfactants and quaternary ammonium salt type surfactants; and a solvent.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 19, 2022
    Applicant: NISSAN CHEMICAL CORPORATION
    Inventors: Takuma NAGAHAMA, Shinichi MAEDA
  • Patent number: 10899720
    Abstract: A polyester resin composition containing 100 parts by mass of a polyester resin and 0.01 to 10 parts by mass of a 2-amino-1,3,5-triazine derivative of Formula [1]: a polyester resin molded body obtained by the composition, and a crystal nucleating agent including the triazine derivative. A polyester resin composition containing a crystal nucleating agent that makes it possible to produce, with high productivity, a polyester resin molded product that promotes polyester resin crystallization and maintains high transparency after crystallization and is applicable for a wide variety of uses can be provided.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: January 26, 2021
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Takuma Nagahama, Takeshi Suwa
  • Publication number: 20190055206
    Abstract: A polyester resin composition containing 100 parts by mass of a polyester resin and 0.01 to 10 parts by mass of a 2-amino-1,3,5-triazine derivative of Formula [1]: a polyester resin molded body obtained by the composition, and a crystal nucleating agent including the triazine derivative. A polyester resin composition containing a crystal nucleating agent that makes it possible to produce, with high productivity, a polyester resin molded product that promotes polyester resin crystallization and maintains high transparency after crystallization and is applicable for a wide variety of uses can be provided.
    Type: Application
    Filed: October 24, 2018
    Publication date: February 21, 2019
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Takuma NAGAHAMA, Takeshi SUWA
  • Publication number: 20170226069
    Abstract: A polyester resin composition containing 100 parts by mass of a polyester resin and 0.01 to 10 parts by mass of a 2-amino-1,3,5-triazine derivative of Formula [1]: a polyester resin molded body obtained by the composition, and a crystal nucleating agent including the triazine derivative. A polyester resin composition containing a crystal nucleating agent that makes it possible to produce, with high productivity, a polyester resin molded product that promotes polyester resin crystallization and maintains high transparency after crystallization and is applicable for a wide variety of uses can be provided.
    Type: Application
    Filed: April 24, 2017
    Publication date: August 10, 2017
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Takuma NAGAHAMA, Takeshi SUWA
  • Patent number: 9683090
    Abstract: A polyester resin composition containing 100 parts by mass of a polyester resin and 0.01 to 10 parts by mass of a 2-amino-1,3,5-triazine derivative of Formula [1]: a polyester resin molded body obtained by the composition, and a crystal nucleating agent including the triazine derivative. A polyester resin composition containing a crystal nucleating agent that makes it possible to produce, with high productivity, a polyester resin molded product that promotes polyester resin crystallization and maintains high transparency after crystallization and is applicable for a wide variety of uses can be provided.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: June 20, 2017
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Takuma Nagahama, Takeshi Suwa
  • Publication number: 20160194477
    Abstract: A polyester resin composition containing 100 parts by mass of a polyester resin and 0.01 to 10 parts by mass of a 2-amino-1,3,5-triazine derivative of Formula [1]: a polyester resin molded body obtained by the composition, and a crystal nucleating agent including the triazine derivative. A polyester resin composition containing a crystal nucleating agent that makes it possible to produce, with high productivity, a polyester resin molded product that promotes polyester resin crystallization and maintains high transparency after crystallization and is applicable for a wide variety of uses can be provided.
    Type: Application
    Filed: March 19, 2014
    Publication date: July 7, 2016
    Inventors: Takuma NAGAHAMA, Takeshi SUWA