Patents by Inventor Toru Takezaki

Toru Takezaki 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 device
    Publication number: 20090039732
    Abstract: A surface acoustic wave device includes a SAW device chip mounted on a substrate, and a lid provided so as to cover the SAW device. A maximum thickness of a ceiling portion of the lid that does not face the SAW device chip is greater than that of another ceiling portion of the lid that faces the SAW device chip.
    Type: Application
    Filed: November 28, 2007
    Publication date: February 12, 2009
    Inventors: Satoshi Orito, Toru Takezaki, Koichi Wada
  • Surface acoustic wave device
    Patent number: 7372347
    Abstract: A surface acoustic wave (SAW) device includes a piezoelectric substrate, a first and a second interdigital transducers (IDT) provided thereon. The second IDT has a side that is substantially aligned with a corresponding side of the first IDT, and another side of the second IDT is arranged so that the second IDT may adjust a leaked wave caused resulting from by a power-flow angle of the piezoelectric substrate.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: May 13, 2008
    Assignee: Fujitsu Media Devices Limited
    Inventors: Satoshi Orito, Tsuyoshi Oura, Toru Takezaki, Satoshi Ichikawa, Hirotada Wachi, Toshifumi Tanaka, Koichi Wada
  • Surface acoustic device
    Patent number: 7221074
    Abstract: A surface acoustic wave device includes a piezoelectric substrate, a first and a second interdigital transducers (IDTs) provided on the piezoelectric substrate. The first IDT includes multiple tracks having different frequency characteristics that are connected in parallel. The second IDT includes a normalized electrode pattern. The frequency characteristic of the multiple tracks is asymmetric to a center frequency of the SAW filter, substantially flat in a passband when those of the multiple tracks are overlapped, or complementary in the passband. Thus, it is possible to provide the surface acoustic wave device having a high damping property.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: May 22, 2007
    Assignee: Fujitsu Media Devices Limited
    Inventors: Satoshi Orito, Toru Takezaki, Satoshi Ichikawa, Hirotada Wachi, Tsuyoshi Oura, Toshifumi Tanaka, Koichi Wada
  • Surface acoustic wave device
    Publication number: 20050168302
    Abstract: A surface acoustic wave (SAW) device includes a piezoelectric substrate, a first and a second interdigital transducers (IDT) provided thereon. The second IDT has a side that is substantially aligned with a corresponding side of the first IDT, and another side of the second IDT is arranged so that the second IDT may adjust a leaked wave caused resulting from by a power-flow angle of the piezoelectric substrate.
    Type: Application
    Filed: November 16, 2004
    Publication date: August 4, 2005
    Inventors: Satoshi Orito, Tsuyoshi Oura, Toru Takezaki, Satoshi Ichikawa, Hirotada Wachi, Toshifumi Tanaka, Koichi Wada
  • Surface acoustic device
    Publication number: 20050121998
    Abstract: A surface acoustic wave device includes a piezoelectric substrate, a first and a second interdigital transducers (IDTs) provided on the piezoelectric substrate. The first IDT includes multiple tracks having different frequency characteristics that are connected in parallel. The second IDT includes a normalized electrode pattern. The frequency characteristic of the multiple tracks is asymmetric to a center frequency of the SAW filter, substantially flat in a passband when those of the multiple tracks are overlapped, or complementary in the passband. Thus, it is possible to provide the surface acoustic wave device having a high damping property.
    Type: Application
    Filed: November 17, 2004
    Publication date: June 9, 2005
    Inventors: Satoshi Orito, Toru Takezaki, Satoshi Ichikawa, Hirotada Wachi, Tsuyoshi Oura, Toshifumi Tanaka, Koichi Wada