Patents by Inventor Hiroyuki SHIOTSUKI

Hiroyuki SHIOTSUKI 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).

  • SILICON DIOXIDE POWDER
    Publication number: 20240158242
    Abstract: A silicon dioxide powder has a uranium content of 0.8 ppb by mass or less and a sphericity of 0.80 or more. The silicon dioxide powder has a low uranium content and a high sphericity.
    Type: Application
    Filed: March 22, 2022
    Publication date: May 16, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Takaaki MINAMIKAWA, Hiroyuki SHIOTSUKI, Koji MIYAZAKI
  • SILICA POWDER AND PRODUCTION METHOD THEREFOR
    Publication number: 20240150184
    Abstract: Silica powder having a dielectric loss tangent of 0.004 or less, in which the number of silicon metal particles in 10 g of the silica powder is 30 or less. A method for producing silica powder, including a heating step of heating silica powder in the presence of chlorine. Silica powder having a low dielectric loss tangent and a low silicon metal content, and a method for producing the silica powder can be provided.
    Type: Application
    Filed: March 11, 2022
    Publication date: May 9, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hiroyuki SHIOTSUKI, Takaaki MINAMIKAWA, Koji MIYAZAKI
  • BORON NITRIDE POWDER AND METHOD FOR PRODUCING BORON NITRIDE POWDER
    Publication number: 20230399264
    Abstract: One aspect of the present disclosure provides a boron nitride powder containing agglomerated particles formed by agglomeration of primary particles of hexagonal boron nitride, in which a degree of purity is 98.5% by mass or more, and a number of particles containing carbon is 10 or less per 10 g of the boron nitride powder.
    Type: Application
    Filed: September 27, 2021
    Publication date: December 14, 2023
    Applicant: Denka Company Limited
    Inventors: Go TAKEDA, Hiroyuki SHIOTSUKI, Takaaki TANAKA
  • BORON NITRIDE POWDER, AND METHOD FOR PRODUCING BORON NITRIDE POWDER
    Publication number: 20230357008
    Abstract: One aspect of the present disclosure provides a boron nitride powder containing agglomerated particles formed by agglomeration of primary particles of hexagonal boron nitride, in which a degree of purity is 98.5% by mass or more, and a concentration of elutable impurities is 700 ppm or less.
    Type: Application
    Filed: September 27, 2021
    Publication date: November 9, 2023
    Applicant: Denka Company Limited
    Inventors: Go TAKEDA, Hiroyuki SHIOTSUKI, Takaaki TANAKA
  • BORON NITRIDE POWDER AND METHOD FOR PRODUCING BORON NITRIDE POWDER
    Publication number: 20230357007
    Abstract: One aspect of the present disclosure provides a boron nitride powder containing agglomerated particles formed by agglomeration of primary particles of hexagonal boron nitride, in which a degree of purity is 98.5% by mass or more, and a number of particles having a magnetizing ability is 10 or less per 10 g of the boron nitride powder.
    Type: Application
    Filed: September 27, 2021
    Publication date: November 9, 2023
    Applicant: Denka Company Limited
    Inventors: Go TAKEDA, Hiroyuki SHIOTSUKI, Takaaki TANAKA