Patents by Inventor Sinjiro SAIGUSA

Sinjiro SAIGUSA 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).

  • Compressed powder core, powders for compressed power core, and method for producing compressed powder core
    Patent number: 10535454
    Abstract: Provided is a compressed powder core that can suppress a decrease in the inductance even when a high magnetic field (of greater than or equal to 40 kA/m) is applied to the compressed powder core while suppressing an iron loss and a decrease in the strength of the compressed powder core. The compressed powder core 1A has soft magnetic particles 11A and aluminum nitride layers 12A formed on the surface layers of the respective soft magnetic particles 11A. The compressed powder core 1A has a ratio of the first differential relative permeability ??L to the second differential relative permeability ??H satisfying a relationship of ??L/??H?6, and has a magnetic flux density of greater than or equal to 1.4 T when a magnetic field of 60 kA/m is applied. The soft magnetic particles of the compressed powder core 1A contain Si in the range of 1.0 to 3.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: January 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Okamoto, Toshimitsu Takahashi, Sinjiro Saigusa, Kohei Ishii, Naoki Iwata, Jung Hwan Hwang, Masashi Ohtsubo, Takeshi Hattori, Masashi Hara
  • COMPRESSED POWDER CORE, POWDERS FOR COMPRESSED POWER CORE, AND METHOD FOR PRODUCING COMPRESSED POWDER CORE
    Publication number: 20170110227
    Abstract: Provided is a compressed powder core that can suppress a decrease in the inductance even when a high magnetic field (of greater than or equal to 40 kA/m) is applied to the compressed powder core while suppressing an iron loss and a decrease in the strength of the compressed powder core. The compressed powder core 1A has soft magnetic particles 11A and aluminum nitride layers 12A formed on the surface layers of the respective soft magnetic particles 11A. The compressed powder core 1A has a ratio of the first differential relative permeability ??L to the second differential relative permeability ??H satisfying a relationship of ??L/??H?6, and has a magnetic flux density of greater than or equal to 1.4 T when a magnetic field of 60 kA/m is applied. The soft magnetic particles of the compressed powder core 1A contain Si in the range of 1.0 to 3.
    Type: Application
    Filed: October 12, 2016
    Publication date: April 20, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke OKAMOTO, Toshimitsu TAKAHASHI, Sinjiro SAIGUSA, Kohei ISHII, Naoki IWATA, Jung Hwan HWANG, Masashi OHTSUBO, Takeshi HATTORI, Masashi HARA