Patents by Inventor Hisashi Mouri

Hisashi Mouri 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).

  • Composite filter, duplexer and communication apparatus
    Patent number: 6480701
    Abstract: The invention provides a composite filter comprising: a single unitary dielectric block having an outer conductor on the external surfaces thereof; a plurality of inner conductors disposed in the dielectric block; a plurality of filters with different frequencies respectively comprising resonators made of at least one of said inner conductor; a first portion of said dielectric block constituting at least one of said filter comprising a first dielectric material; a second portion of said dielectric block constituting the other one of said filter comprising a second dielectric material; and the dielectric constant of said first dielectric material and said second dielectric material being different from each other.
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: November 12, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hiroshi Yonekura, Hirofumi Miyamoto, Hisashi Mouri, Shinichi Sougoya, Soichi Nakamura