Patents by Inventor Ryotaro Tawara

Ryotaro Tawara 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).

  • Piezoceramic material, piezoelectric element and non-resonance knock sensor
    Patent number: 8040024
    Abstract: A piezoceramic material according to an embodiment of the present invention has a composition represented by Pbm{Zr1-x-y-zTixSny(Sb1-nNbn)z}O3 where 1.000?m?1.075, 0.470?x<0.490, 0.020?y?0.040, 0<n<1.000 and 0<z?0.025 and a crystallite size of 30 to 39 nm.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: October 18, 2011
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Masato Yamazaki, Hideaki Hiramitsu, Manabu Horiguchi, Yukihiro Hamaguchi, Katsuya Yamagiwa, Takeshi Mitsuoka, Kazushige Ohbayashi, Ryotaro Tawara, Tomohiro Hirata
  • PIEZOCERAMIC MATERIAL, PIEZOELECTRIC ELEMENT AND NON-RESONANCE KNOCK SENSOR
    Publication number: 20090223282
    Abstract: A piezoceramic material according to an embodiment of the present invention has a composition represented by Pbm{Zr1-x-y-zTixSny(Sb1-nNbn)z}O3 where 1.000?m?1.075, 0.470?x<0.490, 0.020?y?0.040, 0<n<1.000 and 0<z?0.025 and a crystallite size of 30 to 39 nm.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 10, 2009
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Masato YAMAZAKI, Hideaki HIRAMITSU, Manabu HORIGUCHI, Yukihiro HAMAGUCHI, Katsuya YAMAGIWA, Takeshi MITSUOKA, Kazushige OHBAYASHI, Ryotaro TAWARA, Tomohiro HIRATA