Patents by Inventor Hiroyuki KAITANI

Hiroyuki KAITANI 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).

  • Joint connection method for long pipe, and method for producing coiled tubing with joints
    Patent number: 11859748
    Abstract: A joint connection method is provided that is a method for connecting joints that are used for a hydraulic pressure test or the like to a long pipe by using a production facility which includes a conveyance system, a welding apparatus, a winding apparatus and an X-ray inspection apparatus. The joint connection method includes a step of girth welding a first joint to a front end portion of the long pipe by means of the welding apparatus, a step of inspecting a girth weld zone of the first joint by means of the X-ray inspection apparatus, a step of girth welding a second joint to a rear end portion of the long pipe by means of the welding apparatus, and a step of inspecting a girth weld zone of the second joint by means of the X-ray inspection apparatus.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: January 2, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Akira Tsuto, Hiroyuki Kaitani
  • JOINT CONNECTION METHOD FOR LONG PIPE, AND METHOD FOR PRODUCING COILED TUBING WITH JOINTS
    Publication number: 20210033237
    Abstract: A joint connection method is provided that is a method for connecting joints that are used for a hydraulic pressure test or the like to a long pipe by using a production facility which includes a conveyance system, a welding apparatus, a winding apparatus and an X-ray inspection apparatus. The joint connection method includes a step of girth welding a first joint to a front end portion of the long pipe by means of the welding apparatus, a step of inspecting a girth weld zone of the first joint by means of the X-ray inspection apparatus, a step of girth welding a second joint to a rear end portion of the long pipe by means of the welding apparatus, and a step of inspecting a girth weld zone of the second joint by means of the X-ray inspection apparatus.
    Type: Application
    Filed: April 10, 2019
    Publication date: February 4, 2021
    Inventors: Akira TSUTO, Hiroyuki KAITANI