Patents by Inventor Helmut Rosswag

Helmut Rosswag 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).

  • Electrolyte solution for electropolishing
    Patent number: 4372831
    Abstract: An electrolyte solution for electropolishing metallic workpieces. The solution includes a base electrolyte, encompassing concentrated mineral acid such as phosphoric acid, sulfuric acid, nitric acid, perchloric acids, or mixtures thereof, and at least one additive in the form of polyphosphate added thereto for precluding etching of the metal surface of the workpiece to be polished.
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: February 8, 1983
    Assignee: Schenk-Filterbau Gesellschaft mit beschrankter Haftung
    Inventor: Helmut Rosswag