Patents by Inventor Masanobu Mitarai

Masanobu Mitarai 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).

  • Folded strip line type dielectric resonator and multilayer dielectric filter using the same
    Patent number: 5446430
    Abstract: A dielectric resonator of a folded strip line type structure in which an electrode is formed on the outer circumferential portion of a cutout-carrying U-shaped dielectric substrate exclusive of the upper and lower surfaces thereof and either one of two end surfaces at the opened portion of the cutout. An island electrode formed in the vicinity of a non-electrode-carrying end surface out of the two end surfaces at the opened portion of the cutout is used as an input-output coupling electrode. The inner wall surface of the cutout can be formed wavily, and a separate dielectric member can be fitted into the cutout.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: August 29, 1995
    Assignee: Fuji Electrochemical Co., Ltd.
    Inventors: Hideki Yamanaka, Teruto Sugano, Masanobu Mitarai