Patents by Inventor Roelof Arnoldus Minnes

Roelof Arnoldus Minnes 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).

  • Semi-submersible, mobile drilling vessel with storage shaft for tubular drilling equipment
    Patent number: 6524049
    Abstract: The drilling vessel includes at least one floating body and a platform which is supported by one or more support columns on the floating body and includes a drilling installation. The vessel is provided with storage provisions for tubular drilling equipment. The storage provisions include one or more shafts which are disposed in one or more of the support columns, extend downwards from the platform and in which a number of items of the drilling equipment can be vertically disposed.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: February 25, 2003
    Assignee: Workships Contractors B.V.
    Inventor: Roelof Arnoldus Minnes