Patents by Inventor Masahiko Nakatsugawa

Masahiko Nakatsugawa 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).

  • Dielectric resonance device with stabilized electric performance
    Patent number: 6822539
    Abstract: The dielectric resonance device according to the present invention is constructed such that there are provided a column-shaped dielectric resonator and a column-shaped pedestal bonded to the undersurface of the dielectric resonator with the adhesive, for supporting the dielectric resonator, that on the joint surface between the pedestal and the dielectric resonator, there is provided an adhesive collecting recess so as not to reach a side of the pedestal, and that the joint surface and the undersurface of the dielectric resonator are bonded to each other with the adhesive. Therefore, the recess serves as a place for collecting the adhesive so that the adhesive which is squeezed out from between the joint surface and the undersurface of the dielectric resonator can be eliminated, making it possible to provide a dielectric resonance device with stabilized electric performance.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: November 23, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventors: Shuji Saito, Yasuo Yamaki, Susumu Nakajima, Masahiko Nakatsugawa
  • Dielectric resonance device with stabilized electric performance
    Publication number: 20030098763
    Abstract: The dielectric resonance device according to the present invention is constructed such that there are provided a column-shaped dielectric resonator and a column-shaped pedestal bonded to the undersurface of the dielectric resonator with the adhesive, for supporting the dielectric resonator, that on the joint surface between the pedestal and the dielectric resonator, there is provided an adhesive collecting recess so as not to reach a side of the pedestal, and that the joint surface and the undersurface of the dielectric resonator are bonded to each other with the adhesive. Therefore, the recess serves as a place for collecting the adhesive so that the adhesive which is squeezed out from between the joint surface and the undersurface of the dielectric resonator can be eliminated, making it possible to provide a dielectric resonance device with stabilized electric performance.
    Type: Application
    Filed: November 20, 2002
    Publication date: May 29, 2003
    Applicant: Alps Electric Co., Ltd.
    Inventors: Shuji Saito, Yasuo Yamaki, Susumu Nakajima, Masahiko Nakatsugawa