Patents by Inventor Wolfgang Grigel

Wolfgang Grigel 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 thermic disposal of waste materials
    Patent number: 4905614
    Abstract: Waste materials, potentially following their comminution and potentially following their dying or, respectively, preheating, are burned in a cyclone kiln (buring cyclone or, melting cyclone) at extremely high temperatures above 1500.degree. C. with formation of a molten slag low in noxious substances and a hot exhaust gas in which latter the valuable substances and/or noxious substances contained in the waste materials volatilize, whereby dusts enriched with valuable substances on the one hand and, on the other hand, dusts enriched with noxious substances are respectively separately separated out of the exhaust gas by partial condensation.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: March 6, 1990
    Assignee: Klockner-Humboldt-Deutz Aktiengesellschaft
    Inventors: Wolfgang Grigel, Jakob Hinterkeuser, Heinz-Dieter Waldhecker, John Rizzon, Kariheinz Passler
  • Method and apparatus for the common grinding of two or more brittle materials having different grinding properties
    Patent number: 4592512
    Abstract: A roller crusher for receiving a harder to grind material, means mixing the harder to grind material with an easier to grind material and delivering the mixed materials to a ball mill for common grinding, separating the remaining coarse particles from material received by the grinder by a sieve or a cyclone, and recirculating the remaining the coarse particles to the ball mill.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: June 3, 1986
    Assignee: Klockner-Humboldt-Deutz AG
    Inventors: Wolfgang Grigel, Hans Kellerwessel, Raimund Zisselmar