Patents by Inventor Takuma Arikawa

Takuma Arikawa 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).

  • Silicone resin composition and method of producing same
    Patent number: 11643553
    Abstract: A silicone resin composition includes a silicone resin and a ceria-zirconia solid solution, with the solid solution being contained in a range of 0.01 to 2 parts by mass relative to 100 parts by mass of the silicone resin.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: May 9, 2023
    Assignee: Nichia Corporation
    Inventors: Masafumi Kuramoto, Katsuyuki Tsunano, Takuma Arikawa
  • FLUORESCENT MATERIAL COMPOSITE PARTICLES, WAVELENGTH CONVERTING MEMBER, LIGHT EMITTING DEVICE, METHOD FOR PRODUCING FLUORESCENT MATERIAL COMPOSITE PARTICLES, AND METHOD FOR PRODUCING WAVELENGTH CONVERTING MEMBER
    Publication number: 20220403232
    Abstract: Fluorescent material composite particles include translucent inorganic particles having a volume average particle diameter in a range of 30 nm or more and 500 nm or less, fluorescent nanoparticles having an average particle diameter in a range of 5 nm or more and 25 nm or less, and a first resin. At least a part of each of the translucent inorganic particles are embedded in the first resin. The translucent inorganic particles are unevenly distributed to a surface of the fluorescent material composite particles. The fluorescent material composite particles have a volume average particle diameter in a range of 0.5 ?m or more and 50 ?m or less.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 22, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Takuma ARIKAWA, Masafumi KURAMOTO, Hiroki INOUE
  • Rubber composition and pneumatic tire
    Patent number: 11077711
    Abstract: A rubber composition of the present technology is a rubber composition including a diene rubber and a filler; the diene rubber containing at least a styrene-butadiene copolymer; a radical generation index of the styrene-butadiene copolymer being not greater than 1.0 and being smaller than a value Y calculated by Equation (1): Y=?0.0186×(SV mass %+vinyl unit mol %)+1.5.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: August 3, 2021
    Inventors: Wataru Sakai, Takuma Arikawa, Ryosuke Sakai, Yu Shinke, Yuko Sekine, Fumito Yatsuyanagi
  • SILICONE RESIN COMPOSITION AND METHOD OF PRODUCING SAME
    Publication number: 20200308405
    Abstract: A silicone resin composition includes a silicone resin and a ceria-zirconia solid solution, with the solid solution being contained in a range of 0.01 to 2 parts by mass relative to 100 parts by mass of the silicone resin.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Masafumi KURAMOTO, Katsuyuki TSUNANO, Takuma ARIKAWA
  • Rubber Composition and Pneumatic Tire
    Publication number: 20180134078
    Abstract: A rubber composition of the present technology is a rubber composition including a diene rubber and a filler; the diene rubber containing at least a styrene-butadiene copolymer; a radical generation index of the styrene-butadiene copolymer being not greater than 1.0 and being smaller than a value Y calculated by Equation (1): Y=?0.0186×(SV mass %+vinyl unit mol %)+1.5.
    Type: Application
    Filed: April 22, 2016
    Publication date: May 17, 2018
    Inventors: Wataru Sakai, Takuma Arikawa, Ryosuke Sakai, Yu Shinke, Yuko Sekine, Fumito Yatsuyanagi