Patents by Inventor Francois Cyriel D'Haese

Francois Cyriel D'Haese 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).

  • Additive to reduce fluid loss for drilling fluids
    Patent number: 8343895
    Abstract: Additives for reducing the loss of drilling fluid into the formation surrounding a wellbore during the drilling process as well as drilling fluids comprising the additives and methods of using such additives. The additive includes elastomeric, polymeric, and acrylate, non-agglomerated microspheres.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: January 1, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Dirk Van de Peer, Francois Cyriel D'Haese, Rudolf J. Dams
  • ADDITIVE TO REDUCE FLUID LOSS FOR DRILLING FLUIDS
    Publication number: 20100173804
    Abstract: Additives for reducing the loss of drilling fluid into the formation surrounding a wellbore during the drilling process as well as drilling fluids comprising the additives and methods of using such additives. The additive includes elastomeric, polymeric, and acrylate, non-agglomerated microspheres.
    Type: Application
    Filed: May 27, 2008
    Publication date: July 8, 2010
    Inventors: Dirk Van de Peer, Francois Cyríel D'Haese, Rudolf J. Dams