Patents by Inventor Werner Stracke

Werner Stracke 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).

  • Flotation process for the continuous recovery of silver or silver compounds from solutions or dispersions
    Patent number: 4585561
    Abstract: A flotation process for the continuous recovery of silver or silver compounds from solutions or dispersions is described, wherein finely divided, inert gas bubbles are injected into the dispersions of silver and silver compounds in the presence of protein and the pH of the medium is maintained at the isoelectric point of the protein. Addition of a surface active agent accelerates the process. The desilverized effluent has a silver content of less than 1 mg of Ag/l. The quantity of flotate (12) is less than 2% of the quantity of effluent (5) put into the process.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: April 29, 1986
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Marko Zlokarnik, Georg Schindler, Gunther Koepke, Werner Stracke