Patents by Inventor Takashi Arikawa

Takashi Arikawa 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).

  • Yoke compartment of voice coil motor for hard disk drive and voice coil motor using said yoke compartment
    Patent number: 6821359
    Abstract: A deburring method of removing burrs present on the surface of a yoke component, made from a low steel carbon steel, of a voice coil motor for a hard disk drive, includes a first step of subjecting the yoke component to a barrel polishing treatment; and a second step of subjecting the yoke component to at least one of an abrasive grain fluidization treatment, a thermal deburring treatment, a magnetic polishing treatment, an ultrasonic deburring treatment, and a water jet deburring treatment.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: November 23, 2004
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryo Osugi, Takashi Arikawa, Nobutaka Kobayashi
  • Yoke compartment of voice coil motor for hard disk drive and voice coil motor using said yoke component
    Patent number: 6768231
    Abstract: A deburring method of removing burrs present on the surface of a yoke component, made from a low steel carbon steel, of a voice coil motor for a hard disk drive, includes a first step of subjecting the yoke component to a barrel polishing treatment; and a second step of subjecting the yoke component to at least one of an abrasive grain fluidization treatment, a thermal deburring treatment, a magnetic polishing treatment, an ultrasonic deburring treatment, and a water jet deburring treatment.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: July 27, 2004
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryo Osugi, Takashi Arikawa, Nobutaka Kobayashi
  • Yoke compartment of voice coil motor for hard disk drive and voice coil motor using said yoke compartment
    Publication number: 20020187729
    Abstract: A deburring method of removing burrs present on the surface of a yoke component, made from a low steel carbon steel, of a voice coil motor for a hard disk drive, includes a first step of subjecting the yoke component to a barrel polishing treatment; and a second step of subjecting the yoke component to at least one of an abrasive grain fluidization treatment, a thermal deburring treatment, a magnetic polishing treatment, an ultrasonic deburring treatment, and a water jet deburring treatment.
    Type: Application
    Filed: April 25, 2002
    Publication date: December 12, 2002
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryo Osugi, Takashi Arikawa, Nobutaka Kobayashi