Patents by Inventor Hidemitsu Kuboi

Hidemitsu Kuboi 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).

  • Filter including acoustic wave filters connected in parallel
    Patent number: 7629864
    Abstract: A filter includes: a first acoustic wave filter having acoustic wave filters cascaded, an input stage of the acoustic wave filters including a first multimode filter; a second acoustic wave filter having acoustic wave filters cascaded, an input stage of these acoustic wave filters including a second multimode filter having an aperture length different from that of the first multimode filter, the second acoustic wave filter receiving an unbalanced in signal applied to the first acoustic wave filter, and having a pass band that does not overlap with that of the first acoustic wave filter.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: December 8, 2009
    Assignee: Fujitsu Media Devices Limited
    Inventors: Satoru Ono, Osamu Kawachi, Hidemitsu Kuboi, Kouta Ohkubo
  • FILTER INCLUDING ACOUSTIC WAVE FILTERS CONNECTED IN PARALLEL
    Publication number: 20080169882
    Abstract: A filter includes: a first acoustic wave filter having acoustic wave filters cascaded, an input stage of the acoustic wave filters including a first multimode filter; a second acoustic wave filter having acoustic wave filters cascaded, an input stage of these acoustic wave filters including a second multimode filter having an aperture length different from that of the first multimode filter, the second acoustic wave filter receiving an unbalanced in signal applied to the first acoustic wave filter, and having a pass band that does not overlap with that of the first acoustic wave filter.
    Type: Application
    Filed: January 10, 2008
    Publication date: July 17, 2008
    Applicant: FUJITSU MEDIA DEVICES LIMITED
    Inventors: Satoru ONO, Osamu KAWACHI, Hidemitsu KUBOI, Kouta OHKUBO