Patents by Inventor Jean Louis Antoine de Grave

Jean Louis Antoine de Grave 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).

  • Pipeline support
    Patent number: 8747024
    Abstract: A J-lay system constructed to be positioned on board a pipeline-laying vessel, comprising a fixed pipeline support (12) and a movable pipeline support (12) configured for supporting a pipeline (10) which is suspended form the pipeline-laying vessel, —the movable pipeline support (12) comprising: —at least a first movable support member (20A) configured for engaging a first collar (16A) on the pipeline (10), —at least a second movable support member (20B) configured for engaging a second collar (16B) on the pipeline (10), —the fixed pipeline support (12) comprising: —at least a first fixed support member (20A) configured for engaging a third collar on the pipeline (10), —at least a second fixed support member (20B) configured for engaging a fourth collar on the pipeline (10), wherein the first (20A) and second fixed support member (20B) configured for engaging a fourth collar on the pipeline (10).
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: June 10, 2014
    Assignee: Heerema Marine Contractors Nederland SE
    Inventors: Gerardus Cornelius van Grieken, Jean Louis Antoine de Grave, Erwan Karyadi
  • IMPROVED PIPELINE SUPPORT
    Publication number: 20110226373
    Abstract: A J-lay system constructed to be positioned on board a pipeline-laying vessel, comprising a fixed pipeline support (12) and a movable pipeline support (12) configured for supporting a pipeline (10) which is suspended form the pipeline-laying vessel,—the movable pipeline support (12) comprising:—at least a first movable support member (20A) configured for engaging a first collar (16A) on the pipeline (10),—at least a second movable support member (20B) configured for engaging a second collar (16B) on the pipeline (10),—the fixed pipeline support (12) comprising:—at least a first fixed support member (20A) configured for engaging a third collar on the pipeline (10),—at least a second fixed support member (20B) configured for engaging a fourth collar on the pipeline (10), wherein the first (20A) and second fixed support member (20B) configured for engaging a fourth collar on the pipeline (10).
    Type: Application
    Filed: November 18, 2009
    Publication date: September 22, 2011
    Applicant: HEEREMA MARINE CONTRACTORS NEDERLAND B.V.
    Inventors: Gerardus Cornelius van Grieken, Jean Louis Antoine de Grave, Erwan Karyadi