Patents by Inventor Hans-Werner Hohle

Hans-Werner Hohle 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 of utilizing waste dust and waste sludge from blast furnaces and steel works
    Patent number: 4189314
    Abstract: A method of utilizing waste dust and waste sludge from blast furnaces and steel works for subsequent steel production comprising forming the waste dust and waste sludge into pellets containing basic gangue and higher sulphur contents and having a metallization degree of over 80% in which up to 10% by weight of the pellets are intimately mixed with liquid pig iron relative to the weight of the pig iron to form a pig iron melt, the pellets being placed into a pig iron charging ladle prior to and/or during the reladling of the liquid pig iron from a torpedo ladle into a charging ladle, and the pig iron is deslagged prior to the pouring thereof into a refining vessel.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: February 19, 1980
    Assignee: Fried. Krupp Huttenwerke AG
    Inventors: Ludwig Fiege, Hans-Werner Hohle, Wilhelm J. P. Janssen, Klaus-H. Ulrich