Patents by Inventor Franz Pawlek

Franz Pawlek 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).

  • Hydrometallurgical process for extracting copper from chalcopyrite or bornite concentrates
    Patent number: 3949051
    Abstract: A process for extracting copper from a copper-containing concentrate by comminuting the concentrate in the presence of a liquid dispersing agent which inhibits agglomeration and forms a pulp, and leaching the pulp in the presence of a silver catalyst.
    Type: Grant
    Filed: January 7, 1974
    Date of Patent: April 6, 1976
    Inventor: Franz Pawlek