Patents by Inventor Yoichi Tsuji

Yoichi Tsuji 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).

  • Management of database statistics
    Publication number: 20060149695
    Abstract: Various embodiments of a method, apparatus and article of manufacture of managing statistics in a database management system are provided. A volatility of at least one of statistic is determined. One or more statistics collection tasks are generated based on, at least in part, the volatility.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 6, 2006
    Inventors: Patrick Bossman, You-Chin Fuh, Shuanglin Guo, Chan-hua Liu, Yoichi Tsuji, Changjiu Xian
  • Query workload statistics collection in a database management system
    Publication number: 20050234900
    Abstract: In various embodiments, a method, apparatus, and article of manufacture collect statistics in a database management system. A workload comprising a plurality of database queries is received. Query statistics for the database queries are identified. The query statistics for the database queries are consolidated to provide consolidated statistics. One or more statistics collection requests are generated based on the consolidated statistics.
    Type: Application
    Filed: April 14, 2004
    Publication date: October 20, 2005
    Applicant: International Business Machines Corporation
    Inventors: Patrick Bossman, You-Chin Fuh, Shuanglin Guo, Chan-Hua Liu, Yoichi Tsuji
  • Piezoelectric ceramic composition and piezoelectric element
    Patent number: 6514426
    Abstract: A piezoelectric ceramic composition and a piezoelectric element in which cracks and chips are not likely to occur during working even if the thicknesses are reduced, are provided. The piezoelectric ceramic composition contains as a primary component, a complex oxide having a perovskite structure, composed of at least Pb, Zr, Ti, Mn, Nb and O, and represented by general formula ABO3, in which the total molar quantity of elements constituting A is smaller than the total molar quantity of elements constituting B, and Si is present as a secondary component at the content of about 0.010 wt % to 0.090 wt %, in terms of SiO2, relative to the primary component.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: February 4, 2003
    Assignee: Murata Manufacturing Co. Ltd.
    Inventors: Ryosuke Tanimoto, Yoichi Tsuji, Masanori Kimura, Hitoshi Takagi
  • Piezoelectric ceramic composition and piezoelectric element
    Publication number: 20020043642
    Abstract: A piezoelectric ceramic composition and a piezoelectric element in which cracks and chips are not likely to occur during working even if the thicknesses are reduced, are provided. The piezoelectric ceramic composition contains as a primary component, a complex oxide having a perovskite structure, composed of at least Pb, Zr, Ti, Mn, Nb and O, and represented by general formula ABO3, in which the total molar quantity of elements constituting A is smaller than the total molar quantity of elements constituting B, and Si is present as a secondary component at the content of about 0.010 wt % to 0.090 wt %, in terms of SiO2, relative to the primary component.
    Type: Application
    Filed: August 20, 2001
    Publication date: April 18, 2002
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Ryosuke Tanimoto, Yoichi Tsuji, Masanori Kimura, Hitoshi Takagi