Patents by Inventor Wilfried Becher, deceased

Wilfried Becher, deceased 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).

  • Method for the preparation of a soldering flux
    Patent number: 5968288
    Abstract: A method for the preparation of potassium salts of complex aluminum fluorides which can be used in particular as a flux in particular for soldering lightweight metallic materials. In the method a potassium compound is added to aqueous fluoroaluminic acid, and potassium cryolite or a substance mixture which contains potassium cryolite is added to the resulting suspension. The resulting product is then dried and can be used as a flux for soldering lightweight metallic materials, especially aluminum.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: October 19, 1999
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Heinrich Willenberg, Wilfried Becher, deceased, Karl-Heinz Hellberg