Patents by Inventor Mikiko Tsutsui

Mikiko Tsutsui 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).

  • Electromagnetic wave absorbing body and method for manufacturing electromagnetic wave absorbing body
    Patent number: 10617046
    Abstract: The present invention relates to an electromagnetic wave absorbing body which is a sheet-like electromagnetic wave absorbing body in which particles including a soft magnetic material are dispersed in a matrix including a non-metal material, in which the electromagnetic wave absorbing body satisfies a relationship: ???, in which ? is a parameter given by Equation (1): ?=Ad(??)0.5/(??+???/?), in which d is a thickness of the electromagnetic wave absorbing body, ?, ??, ?, and ?? are a permittivity of the electromagnetic wave absorbing body, a loss term of ?, a permeability of the electromagnetic wave absorbing body, and a loss term of ?, respectively, and A is equal to 8×104/?(?/m).
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: April 7, 2020
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Akihiko Saito, Yu Nakama, Mikiko Tsutsui, Tadashi Hattori
  • ELECTROMAGNETIC WAVE ABSORBING BODY AND METHOD FOR MANUFACTURING ELECTROMAGNETIC WAVE ABSORBING BODY
    Publication number: 20180103564
    Abstract: The present invention relates to an electromagnetic wave absorbing body which is a sheet-like electromagnetic wave absorbing body in which particles including a soft magnetic material are dispersed in a matrix including a non-metal material, in which the electromagnetic wave absorbing body satisfies a relationship: ???, in which ? is a parameter given by Equation (1): ?=Ad(??)0.5/(??+???/?), in which d is a thickness of the electromagnetic wave absorbing body, ?, ??, ?, and ?? are a permittivity of the electromagnetic wave absorbing body, a loss term of ?, a permeability of the electromagnetic wave absorbing body, and a loss term of ?, respectively, and A is equal to 8×104/?(?/m).
    Type: Application
    Filed: September 26, 2017
    Publication date: April 12, 2018
    Inventors: Akihiko SAITO, Yu NAKAMA, Mikiko TSUTSUI, Tadashi HATTORI
  • SOFT MAGNETIC METAL POWDER AND POWDER CORE
    Publication number: 20140251085
    Abstract: The present invention provides a powder core used for high-frequency magnetic components and a soft magnetic metal powder which is suitable for the manufacturing of the above-described powder core. The invention relates to a soft magnetic metal powder, consisting of, in terms of mass %: 0.5% to 10.0% of Si, 1.5% to 8.0% of Cr, and 0.05% to 3.0% of Sn, with the balance being Fe and unavoidable impurities.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Inventors: Mikiko Tsutsui, Yuichiro Fujita