Patents by Inventor Syunji Kasahara

Syunji Kasahara 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).

  • Sintered spherical BN particles, method of producing the same, and polymer material
    Patent number: 9334391
    Abstract: Sintered spherical BN particles having secondary particles formed of aggregated primary BN particles, in which the number ratio of particles, each having a recess on its surface is 50% or more in the sintered spherical BN particles, and each of the sintered spherical BN particles has a compressive strength of 0.1 MPa to 100 MPa. The sintered spherical BN particles are not only excellent in heat dissipation properties and adhesiveness, but also have high compressive strength, and therefore, show a small variation in heat dissipation properties and is free from conduction failure, which would otherwise be caused by exfoliation of the copper foil, when used as a filling material for a polymer composite material.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: May 10, 2016
    Assignee: MIZUSHIMA FERROALLOY CO., LTD.
    Inventors: Takahisa Koshida, Syunji Kasahara, Shoichi Hiwasa
  • SINTERED SPHERICAL BN PARTICLES, METHOD OF PRODUCING THE SAME, AND POLYMER MATERIAL
    Publication number: 20150152251
    Abstract: Sintered spherical BN particles having secondary particles formed of aggregated primary BN particles, in which the number ratio of particles, each having a recess on its surface is 50% or more in the sintered spherical BN particles, and each of the sintered spherical BN particles has a compressive strength of 0.1 MPa to 100 MPa. The sintered spherical BN particles are not only excellent in heat dissipation properties and adhesiveness, but also have high compressive strength, and therefore, show a small variation in heat dissipation properties and is free from conduction failure, which would otherwise be caused by exfoliation of the copper foil, when used as a filling material for a polymer composite material.
    Type: Application
    Filed: June 25, 2013
    Publication date: June 4, 2015
    Inventors: Takahisa Koshida, Syunji Kasahara, Shoichi Hiwasa