Patents by Inventor Helmut Wustner

Helmut Wustner 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 and apparatus for the drying and fine-grinding of coal
    Patent number: 4193554
    Abstract: An apparatus and method for the safe preparation of pulverized coal comprises the steps of mixing coal with an inert gas in a pulverizing mill, separating dry coal dust from an exhaust gas bearing a residue of coal dust in a separator, mixing the exhaust gas with additional inert gas and filtering the coal dust from the gas mixture in a filter.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: March 18, 1980
    Assignee: Klockner-Humboldt-Deutz AG
    Inventors: Jakob Ansen, Horst Herchenbach, Helmut Wustner, Heinz Fasbender