Patents by Inventor Tatuso Ono

Tatuso Ono 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).

  • Threaded tube joint
    Patent number: 7255374
    Abstract: A threaded tube joint for oil extraction industry has a trapezoidal thread and a toroidal sealing surface (11) placed at its end near the thread and engages, for sealing, a corresponding frusto-conical sealing surface (12) wherein the toroidal sealing surface (11) has a radius Rs value comprised within the range given by the formula E 2 ? Vo ? ( b 2.15 ) 2 ? Rs ? ? · E 2 ? tn n 3 ? OD 2 240 ? ? ? · ? ad 2 ? wt 2 ? ( 1 - ? 2 ) ? [ 3 ? ( 1 - ? 2 ) R n 2 ? tn 2 ] 3 / 4 .
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: August 14, 2007
    Assignee: Tenaris Connections AG
    Inventors: Gabriel Carcagno, Rita G. Toscano, Hisao Nakamura, Tommaso Coppola, Tatuso Ono