Patents by Inventor Mitsuyoshi Hira

Mitsuyoshi Hira 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).

  • Surface acoustic wave branching filter
    Patent number: 7023297
    Abstract: A surface acoustic wave duplexer includes a transmission-side surface acoustic wave filter and a receiving-side surface acoustic wave filter which are connected to an antenna terminal, and the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter are mounted on a package material. The surface acoustic wave duplexer further includes a high-frequency wave element which is connected to the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter, and at the same time, has two trap attenuation poles at the higher frequency side than at least the transmission-side pass band and the receiving-side pass band.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: April 4, 2006
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Norio Taniguchi, Yasunori Kishimoto, Mitsuyoshi Hira
  • Surface acoustic wave branching filter
    Publication number: 20040227586
    Abstract: A surface acoustic wave duplexer includes a transmission-side surface acoustic wave filter and a receiving-side surface acoustic wave filter which are connected to an antenna terminal, and the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter are mounted on a package material. The surface acoustic wave duplexer further includes a high-frequency wave element which is connected to the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter, and at the same time, has two trap attenuation poles at the higher frequency side than at least the transmission-side pass band and the receiving-side pass band.
    Type: Application
    Filed: March 30, 2004
    Publication date: November 18, 2004
    Inventors: Norio Taniguchi, Yasunori Kishimoto, Mitsuyoshi Hira
  • Surface acoustic wave branching filter
    Publication number: 20040227585
    Abstract: A surface acoustic wave duplexer includes a transmission-side surface acoustic wave filter and a receiving-side surface acoustic wave filter which are connected to an antenna terminal, and the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter are mounted on a package material. The surface acoustic wave duplexer further includes a high-frequency wave suppression element which is connected to the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter, and at the same time, has two trap attenuation poles at the higher frequency side than at least the transmission-side pass band and the receiving-side pass band.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 18, 2004
    Inventors: Norio Taniguchi, Yasunori Kishimoto, Mitsuyoshi Hira