Patents by Inventor Kellerwessel

Kellerwessel 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 compressing and agglomerating coal dust
    Patent number: 4323532
    Abstract: The present invention is directed to a method for compressing and agglomerating coal dust without the use of bonding agents in which the coal dust is passed through a conventional roll press operating at a compressive force of at least 20 kilonewtons (kN) per centimeter (cm) of roll width. The high pressure conditions make it possible to secure suitable compression and agglomeration at temperatures below 200.degree. C.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: April 6, 1982
    Assignee: Klockner-Humboldt-Deutz AG
    Inventors: Hugo Bleckmann, Kellerwessel