Patents by Inventor Mitsuhiro MATSUHASHI

Mitsuhiro MATSUHASHI 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).

  • High permeability magnetic sheet
    Patent number: 10593453
    Abstract: A magnetic sheet comprises, by vol. %, Fe—Si—Al alloy flat powder: 36% or more. The Fe—Si—Al alloy flat powder comprises, by wt %, 9.3%?Si?9.7%, 5.7%?Al?6.1%, and remaining Fe. The Fe—Si—Al alloy flat powder has: an aspect ratio in a range of 20 or more and 50 or less; a 50% particle size D50 in a range of 50 ?m or more and 100 ?m or less; and a coercivity Hc of 60 A/m or less. The magnetic sheet has a temperature characteristic of permeability ?? measured at 1 MHz exhibiting a maximum value in a range of 0° C. or more and 40° C. or less.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: March 17, 2020
    Assignee: TDK CORPORATION
    Inventors: Atsuhito Matsukawa, Yoshihiro Honjo, Mitsuhiro Matsuhashi
  • SOFT MAGNETIC RIBBON FOR MAGNETIC CORE, MAGNETIC CORE, COIL UNIT, AND WIRELESS POWER TRANSMISSION UNIT
    Publication number: 20180286550
    Abstract: A soft magnetic ribbon for a magnetic core segmented into small pieces includes: an inductance priority region having a first average crack interval; and an eddy current suppression priority region having a second average crack interval, in which the first and second average crack intervals are different from each other.
    Type: Application
    Filed: March 19, 2018
    Publication date: October 4, 2018
    Applicant: TDK CORPORATION
    Inventors: Isao Nakahata, Mitsuhiro Matsuhashi
  • HIGH PERMEABILITY MAGNETIC SHEET
    Publication number: 20180025821
    Abstract: A magnetic sheet comprises, by vol. %, Fe—Si—Al alloy flat powder: 36% or more. The Fe—Si—Al alloy flat powder comprises, by wt %, 9.3%?Si?9.7%, 5.7%?Al?6.1%, and remaining Fe. The Fe—Si—Al alloy flat powder has: an aspect ratio in a range of 20 or more and 50 or less; a 50% particle size D50 in a range of 50 ?m or more and 100 ?m or less; and a coercivity Hc of 60 A/m or less. The magnetic sheet has a temperature characteristic of permeability ?? measured at 1 MHz exhibiting a maximum value in a range of 0° C. or more and 40° C. or less.
    Type: Application
    Filed: July 24, 2017
    Publication date: January 25, 2018
    Applicant: TDK CORPORATION
    Inventors: Atsuhito MATSUKAWA, Yoshihiro HONJO, Mitsuhiro MATSUHASHI