Patents by Inventor Tieqiao Xie

Tieqiao Xie 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).

  • Thread rolling fixed length spiral rib steel wire
    Patent number: 9366032
    Abstract: The present invention discloses a thread rolling fixed length, spiral rib steel wire used in prestressed concrete sleepers and track plates, including a 2.5 m long spiral rib prestressed steel wire, where both ends of said steel wire have continuous external thread section whose length is 30±2 mm, wherein, the surface of said steel wire has four parallel winding spiral ribs whose cross section is trapezoidal and lead is 41˜55 mm, the nominal diameter of said steel wire is 9.5 mm, 10.0 mm, or 10.5 mm, and the elastic-limit of said steel wire is larger than 1200 N/mm2.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: June 14, 2016
    Inventor: Tieqiao Xie
  • Thread Rolling Fixed Length Spiral Rib Steel Wire
    Publication number: 20150079418
    Abstract: The present invention discloses a thread rolling fixed length, spiral rib steel wire used in prestressed concrete sleepers and track plates, including a 2.5 m long spiral rib prestressed steel wire, where both ends of said steel wire have continuous external thread section whose length is 30±2 mm, wherein, the surface of said steel wire has four parallel winding spiral ribs whose cross section is trapezoidal and lead is 41˜55 mm, the nominal diameter of said steel wire is 9.5 mm, 10.0 mm, or 10.5 mm, and the elastic-limit of said steel wire is larger than 1200N/mm2.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 19, 2015
    Inventor: Tieqiao Xie