Patents by Inventor Sjoerd Hoekstra

Sjoerd Hoekstra 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).

  • Ballast system for floating offshore platforms
    Patent number: 9227702
    Abstract: A floating, offshore drilling and/or production platform such as a tension leg platform, semi-submersible, spar or the like is equipped with a ballast tank system that comprises the traditional tank and a shaft that runs typically vertically from top-of-hull level to the top of the tank. This shaft is large enough to allow the ballast pipe, sounding lines, instrumentation piping, etc. to be installed within it. In certain embodiments, the shaft itself functions as a vent line.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: January 5, 2016
    Assignee: Seahorse Equipment Corp
    Inventors: Oriol R. Rijken, Edward Sean Large, Sjoerd Hoekstra
  • Ballast System For Floating Offshore Platforms
    Publication number: 20130287502
    Abstract: A floating, offshore drilling and/or production platform such as a tension leg platform, semi-submersible, spar or the like is equipped with a ballast tank system that comprises the traditional tank and a shaft that runs typically vertically from top-of-hull level to the top of the tank. This shaft is large enough to allow the ballast pipe, sounding lines, instrumentation piping, etc. to be installed within it. In certain embodiments, the shaft itself functions as a vent line.
    Type: Application
    Filed: April 30, 2013
    Publication date: October 31, 2013
    Applicant: Seahorse Equipment Corp
    Inventors: Oriol R. Rijken, Edward Sean Large, Sjoerd Hoekstra