Patents by Inventor Yoshinori Mitamura

Yoshinori Mitamura 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).

  • Magnetic fluid seal for implantable devices
    Patent number: 10443738
    Abstract: Systems and methods for providing a magnetic fluid (MF) seal suitable for a fluid environment may provide a shaft and a magnet that is cylindrical or ring-shaped. A magnetic fluid may be present between the magnet and shaft. Additionally, pole pieces may also be provided, which are also cylindrical or ring-shaped. These pole pieces are positioned on the shaft so the magnet is sandwiched between the pole pieces. The magnet, pole pieces, and shaft, if magnetic, may attract and retain the magnetic fluid in an annular gap or region between the shaft and the magnet and/or the pole pieces. The magnetic fluid in the annular gap serves as a seal or barrier that prevents fluid from passing through when pressure is below a predetermined level.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: October 15, 2019
    Assignee: PROCYRION, INC.
    Inventors: Christopher A. Durst, Jason J. Heuring, Benjamin A. Hertzog, Yoshinori Mitamura
  • Magnetic Fluid Seal for Implantable Devices
    Publication number: 20170363210
    Abstract: Systems and methods for providing a magnetic fluid (MF) seal suitable for a fluid environment may provide a shaft and a magnet that is cylindrical or ring-shaped. A magnetic fluid may be present between the magnet and shaft. Additionally, pole pieces may also be provided, which are also cylindrical or ring-shaped. These pole pieces are positioned on the shaft so the magnet is sandwiched between the pole pieces. The magnet, pole pieces, and shaft, if magnetic, may attract and retain the magnetic fluid in an annular gap or region between the shaft and the magnet and/or the pole pieces. The magnetic fluid in the annular gap serves as a seal or barrier that prevents fluid from passing through when pressure is below a predetermined level.
    Type: Application
    Filed: June 19, 2017
    Publication date: December 21, 2017
    Applicant: Procyrion, Inc.
    Inventors: Christopher A. Durst, Jason J. Heuring, Benjamin A. Hertzog, Yoshinori Mitamura