Patents by Inventor So Yajima

So Yajima 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).

  • Planar type frequency shift probe for measuring plasma electron densities and method and apparatus for measuring plasma electron densities
    Patent number: 8040138
    Abstract: A planar type frequency shift probe that utilizes resonance of electromagnetic waves and includes a main body with a conductor plate and a coaxial cable. The main body includes a long narrow space, which has predetermined width and length and has an opening on the periphery of the main body, as well as the first surface part and the second surface part. The surface conductor of the coaxial cable is connected to the first surface part while the core conductor of the coaxial cable is connected to the second surface part via a lead wire.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: October 18, 2011
    Assignee: National University Corporation Nagoya University
    Inventors: Hideo Sugai, So Yajima, Keiji Nakamura
  • PLANAR TYPE FREQUENCY SHIFT PROBE FOR MEASURING PLASMA ELECTRON DENSITIES AND METHOD AND APPARATUS FOR MEASURING PLASMA ELECTRON DENSITIES
    Publication number: 20090230973
    Abstract: A planar type frequency shift probe that utilizes resonance of electromagnetic waves and includes a main body with a conductor plate and a coaxial cable. The main body includes a long narrow space, which has predetermined width and length and has an opening on the periphery of the main body, as well as the first surface part and the second surface part. The surface conductor of the coaxial cable is connected to the first surface part while the core conductor of the coaxial cable is connected to the second surface part via a lead wire.
    Type: Application
    Filed: August 25, 2006
    Publication date: September 17, 2009
    Applicant: National University Corporation Nagoya University
    Inventors: Hideo Sugai, So Yajima, Keiji Nakamura