Patents by Inventor Theobald De Haan

Theobald De Haan 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).

  • Aluminium brazing sheet material
    Patent number: 8455110
    Abstract: A brazing sheet material for CAB brazing without applying flux. The brazing sheet material including an aluminum core alloy layer provided with a first brazing clad layer material on one or both sides of the aluminum core layer and at least one second brazing clad layer material positioned between the aluminum core alloy layer and the first braze clad layer material. The second brazing clad layer material is an Al—Si alloy brazing material having 5% to 20% Si and 0.01% to 3% Mg, and the first brazing clad layer material is an Al—Si alloy brazing material having 2% to 14% Si and less than 0.4% Mg. Also disclosed is a brazed assembly manufactured in a brazing operation.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: June 4, 2013
    Assignee: Aleris Aluminum Koblenz GmbH
    Inventors: Adrianus Jacobus Wittebrood, Theobald De Haan, Achim Bürger
  • ALUMINIUM BRAZING SHEET MATERIAL
    Publication number: 20110111254
    Abstract: A brazing sheet material for CAB brazing without applying flux. The brazing sheet material including an aluminum core alloy layer provided with a first brazing clad layer material on one or both sides of the aluminum core layer and at least one second brazing clad layer material positioned between the aluminum core alloy layer and the first braze clad layer material. The second brazing clad layer material is an Al—Si alloy brazing material having 5% to 20% Si and 0.01% to 3% Mg, and the first brazing clad layer material is an Al—Si alloy brazing material having 2% to 14% Si and less than 0.4% Mg. Also disclosed is a brazed assembly manufactured in a brazing operation.
    Type: Application
    Filed: June 25, 2009
    Publication date: May 12, 2011
    Inventors: Adrianus Jacobus Wittebrood, Theobald De Haan, Achim Burger