Patents by Inventor Toshiki TAKENAKA

Toshiki TAKENAKA 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).

  • Method for forming multilayer coating film
    Patent number: 11420226
    Abstract: An object achieved by the present invention is to provide a coated article having excellent appearance, corrosion resistance, weatherability, and chipping resistance obtained by a wet-on-wet coating.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: August 23, 2022
    Assignee: KANSAI PAINT CO., LTD.
    Inventors: Hirohisa Tsuda, Toshiki Takenaka, Michihiro Fujita, Hideaki Katsuta
  • Composite particles, method for producing composite particles, and use thereof
    Patent number: 10876010
    Abstract: In a method for producing composite particles containing polymer particles and silica particles that adhere to the polymer particles, the composite particles are obtained by subjecting a polymerizable monomer to aqueous suspension polymerization in a presence of silica particles and a cellulose compound adsorbing onto the silica particles. The composite particles contain the polymer particles, the silica particles that adhere to surfaces of the polymer particles, and the water-soluble cellulose compound.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: December 29, 2020
    Assignee: SEKISUI KASEI CO., LTD.
    Inventors: Toshiki Takenaka, Mayumi Takayama, Akiyoshi Kusaka, Masaaki Nakamura
  • METHOD FOR FORMING MULTILAYER COATING FILM
    Publication number: 20190168255
    Abstract: An object achieved by the present invention is to provide a coated article having excellent appearance, corrosion resistance, weatherability, and chipping resistance obtained by a wet-on-wet coating.
    Type: Application
    Filed: April 11, 2017
    Publication date: June 6, 2019
    Applicant: KANSAI PAINT CO., LTD.
    Inventors: Hirohisa TSUDA, Toshiki TAKENAKA, Michihiro FUJITA, Hideaki KATSUTA
  • COMPOSITE PARTICLES, METHOD FOR PRODUCING COMPOSITE PARTICLES, AND USE THEREOF
    Publication number: 20190055425
    Abstract: In a method for producing composite particles containing polymer particles and silica particles that adhere to the polymer particles, the composite particles are obtained by subjecting a polymerizable monomer to aqueous suspension polymerization in a presence of silica particles and a cellulose compound adsorbing onto the silica particles. The composite particles contain the polymer particles, the silica particles that adhere to surfaces of the polymer particles, and the water-soluble cellulose compound.
    Type: Application
    Filed: October 19, 2018
    Publication date: February 21, 2019
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Toshiki TAKENAKA, Mayumi TAKAYAMA, Akiyoshi KUSAKA, Masaaki NAKAMURA
  • Composite particles, method for producing composite particles, and use thereof
    Patent number: 10174190
    Abstract: There are provided a method for producing particles by suspension polymerization which ensures an excellent dispersion stability of the monomer and a simpler washing step, composite particles obtainable by this production method, and use of the composite particles. The method for producing composite particles includes a polymerization step of subjecting a monomer mixture which contains a polymerizable vinyl monomer to aqueous suspension polymerization in a presence of small polymer particles having a volume-average particle size of 20 to 500 nm, with a water-soluble cellulose compound adsorbing on surfaces of the small polymer particles, and thereby obtaining composite particles which contain the small polymer particles and large polymer particles greater than the small polymer particles.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: January 8, 2019
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventors: Mayumi Ando, Toshiki Takenaka, Akiyoshi Kusaka, Takashi Goto
  • COMPOSITE PARTICLES, METHOD FOR PRODUCING COMPOSITE PARTICLES, AND USE THEREOF
    Publication number: 20170058116
    Abstract: There are provided a method for producing particles by suspension polymerization which ensures an excellent dispersion stability of the monomer and a simpler washing step, composite particles obtainable by this production method, and use of the composite particles. The method for producing composite particles includes a polymerization step of subjecting a monomer mixture which contains a polymerizable vinyl monomer to aqueous suspension polymerization in a presence of small polymer particles having a volume-average particle size of 20 to 500 nm, with a water-soluble cellulose compound adsorbing on surfaces of the small polymer particles, and thereby obtaining composite particles which contain the small polymer particles and large polymer particles greater than the small polymer particles.
    Type: Application
    Filed: March 26, 2015
    Publication date: March 2, 2017
    Inventors: Mayumi Ando, Toshiki Takenaka, Akiyoshi Kusaka, Takashi Goto
  • COMPOSITE PARTICLES, METHOD FOR PRODUCING COMPOSITE PARTICLES, AND USE THEREOF
    Publication number: 20160280936
    Abstract: In a method for producing composite particles containing polymer particles and silica particles that adhere to the polymer particles, the composite particles are obtained by subjecting a polymerizable monomer to aqueous suspension polymerization in a presence of silica particles and a cellulose compound adsorbing onto the silica particles. The composite particles contain the polymer particles, the silica particles that adhere to surfaces of the polymer particles, and the water-soluble cellulose compound.
    Type: Application
    Filed: November 13, 2013
    Publication date: September 29, 2016
    Inventors: Toshiki TAKENAKA, Mayumi TAKAYAMA, Akiyoshi KUSAKA, Masaaki NAKAMURA