Patents by Inventor Chunqun Ji

Chunqun Ji 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).

  • Relating to buoyancy-supported risers
    Patent number: 9422773
    Abstract: A subsea riser support buoy is disclosed having a riser support member and a jumper support member that extend generally parallel to each other and that define a lengthwise direction extending between them across the buoy. Pontoons extend lengthwise beyond the riser support member and the jumper support member to provide attachment points for connecting tethers to the buoy. In this way, the attachment points are spaced more widely than lengthwise extremities of the riser support member and the jumper support member, beneficially altering the dynamic behavior of the buoy and especially its pitch characteristics.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: August 23, 2016
    Assignee: Subsea 7 Limited
    Inventors: Daniel Karunakaran, Frederico Nicoletti De Fraga, Chunqun Ji, Chunfa Wu, Yun Ding
  • Relating to Buoyancy-Supported Risers
    Publication number: 20150247366
    Abstract: A subsea riser support buoy is disclosed having a riser support member and a jumper support member that extend generally parallel to each other and that define a lengthwise direction extending between them across the buoy. Pontoons extend lengthwise beyond the riser support member and the jumper support member to provide attachment points for connecting tethers to the buoy. In this way, the attachment points are spaced more widely than lengthwise extremities of the riser support member and the jumper support member, beneficially altering the dynamic behaviour of the buoy and especially its pitch characteristics.
    Type: Application
    Filed: October 7, 2013
    Publication date: September 3, 2015
    Inventors: Daniel Karunakaran, Frederico Nicoletti De Fraga, Chunqun Ji, Chunfa Wu, Yun Ding