Patents by Inventor Mitsutaka TAKAHASHI

Mitsutaka TAKAHASHI 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).

  • Spherical aluminum nitride powder and method for producing spherical aluminum nitride powder
    Patent number: 11358865
    Abstract: Provided is a spherical aluminum nitride powder having a particle shape that is closer to sphericity. The spherical aluminum nitride powder according to the present invention, which contains a main component comprising AlN and a side component comprising a rare earth compound, is characterized in that at least 70% of particles in the powder have an outer peripheral shape having neither an angular edge part nor an uneven part in the plane projection image of individual particles.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: June 14, 2022
    Assignee: MARUWA CO., LTD.
    Inventors: Fuyuki Ito, Daisuke Kato, Mitsutaka Takahashi
  • Aluminum nitride sintered body and method for producing same
    Patent number: 11319254
    Abstract: An aluminum nitride sintered body with improved mechanical strength without compromised thermal dissipating properties. The aluminum nitride sintered body contains 100 parts by weight of AlN, 3 to 20 parts by weight on an oxide basis of at least one type of nitride selected from the group consisting of Zr and Ti as an additive, and 1 to 10 parts by weight of Y2O3 as a sintering aid. The oxygen content in the sintered body is 1.8 wt % or less, and the thermal conductivity is 130 W/m·K or higher.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: May 3, 2022
    Assignee: MARUWA CO., LTD.
    Inventors: Mitsutaka Takahashi, Genki Hirashima, Daisuke Kato
  • ALUMINUM NITRIDE SINTERED BODY AND METHOD FOR PRODUCING SAME
    Publication number: 20210323876
    Abstract: An aluminum nitride sintered body with improved mechanical strength without compromised thermal dissipating properties. The aluminum nitride sintered body contains 100 parts by weight of AlN, 3 to 20 parts by weight on an oxide basis of at least one type of nitride selected from the group consisting of Zr and Ti as an additive, and 1 to 10 parts by weight of Y2O3 as a sintering aid. The oxygen content in the sintered body is 1.8 wt % or less, and the thermal conductivity is 130 W/m·K or higher.
    Type: Application
    Filed: September 19, 2018
    Publication date: October 21, 2021
    Inventors: Mitsutaka Takahashi, Genki Hirashima, Daisuke Kato
  • SPHERICAL ALUMINUM NITRIDE POWDER AND METHOD FOR PRODUCING SPHERICAL ALUMINUM NITRIDE POWDER
    Publication number: 20210246024
    Abstract: Provided is a spherical aluminum nitride powder having a particle shape that is closer to sphericity. The spherical aluminum nitride powder according to the present invention, which contains a main component comprising AlN and a side component comprising a rare earth compound, is characterized in that at least 70% of particles in the powder have an outer peripheral shape having neither an angular edge part nor an uneven part in the plane projection image of individual particles.
    Type: Application
    Filed: August 5, 2019
    Publication date: August 12, 2021
    Inventors: Fuyuki ITO, Daisuke KATO, Mitsutaka TAKAHASHI