Patents by Inventor Ryosuke Matsuda

Ryosuke Matsuda 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).

  • Motor including permanent magnet rotor with flux barrier
    Patent number: 9893577
    Abstract: A rotating portion of a motor includes magnets and a rotor core that holds the magnets in holding holes. Each of the magnets includes a first magnet element and two second magnet elements. The two second magnet elements are located on opposite circumferential sides of the first magnet element, and a coercivity of the two second magnet elements is smaller than the first magnet element. The rotor core includes a flux barrier including a void located on a radially inner side of the first magnet elements. A width of the magnets in a direction perpendicular or substantially perpendicular to a radial direction passing through a center of the corresponding first magnet element is larger than a width in the same direction of the corresponding flux barrier within a plane perpendicular or substantially perpendicular to the center axis.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: February 13, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Ryosuke Matsuda, Shinichi Noda
  • MOTOR
    Publication number: 20150372578
    Abstract: A rotating portion of a motor includes magnets and a rotor core that holds the magnets in holding holes. Each of the magnets includes a first magnet element and two second magnet elements. The two second magnet elements are located on opposite circumferential sides of the first magnet element, and a coercivity of the two second magnet elements is smaller than the first magnet element. The rotor core includes a flux barrier including a void located on a radially inner side of the first magnet elements. A width of the magnets in a direction perpendicular or substantially perpendicular to a radial direction passing through a center of the corresponding first magnet element is larger than a width in the same direction of the corresponding flux barrier within a plane perpendicular or substantially perpendicular to the center axis.
    Type: Application
    Filed: April 22, 2015
    Publication date: December 24, 2015
    Inventors: Ryosuke MATSUDA, Shinichi NODA
  • Process for measuring an analyte with an oxidase and an oxidizable color reagent and surfactants
    Patent number: 5384248
    Abstract: A substrate or an enzymatic activity in a body fluid can be measured accurately without influences of interfering substances such as bilirubin by reacting an oxidase corresponding to an analyte with the analyte or an oxidase corresponding to a substance produced by enzymatic reaction with the substance in a measuring system containing one or more cationic and/or amphoteric surfactants, followed by optical measurement of hydrogen peroxide produced by the reaction.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: January 24, 1995
    Assignee: Wako Pure Chemical Industries, Ltd.
    Inventors: Yoshitsugu Sakata, Toshiro Hanada, Ryosuke Matsuda, Yoshiyuki Matsuda