Patents by Inventor Marcel Marco Landwehr

Marcel Marco Landwehr 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).

  • Controlling buoyancy when towing, lowering and raising submerged structures
    Patent number: 10753509
    Abstract: A subsea structure has an elongate articulated buoyancy string having a longitudinal series of buoyancy elements, and at least one elongate buoyancy holder that is fixed relative to the structure and is capable of housing the buoyancy string. The buoyancy of the structure can be altered by moving the buoyancy string along a transit path that extends along and within the buoyancy holder and through an end opening of the buoyancy holder. The buoyancy string passes through that end opening on being inserted into or withdrawn from the buoyancy holder.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 25, 2020
    Assignee: Acergy France SAS
    Inventor: Marcel Marco Landwehr
  • Controlling Buoyancy When Towing, Lowering and Raising Submerged Structures
    Publication number: 20190346068
    Abstract: A subsea structure comprises: an elongate articulated buoyancy string comprising a longitudinal series of buoyancy elements; and at least one elongate buoyancy holder that is fixed relative to the structure and is capable of housing the buoyancy string. The buoyancy of the structure may be altered by moving the buoyancy string along a transit path that extends along and within the buoyancy holder and through an end opening of the buoyancy holder. The buoyancy string passes through that end opening on being inserted into or withdrawn from the buoyancy holder.
    Type: Application
    Filed: December 22, 2017
    Publication date: November 14, 2019
    Inventor: Marcel Marco Landwehr