Patents by Inventor Oliver Schumacher

Oliver Schumacher 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).

  • Process for the solvent extraction of palladium from aqueous solutions
    Patent number: 5292491
    Abstract: The invention relates to a process for the solvent extraction of palladium from aqueous solutions of palladium salts which contain nitrate ions and are essentially free of halide and pseudohalide ions, pyridinecarboxylic esters being used as the extraction medium.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: March 8, 1994
    Assignee: Schering Aktiengesellschaft
    Inventor: Oliver Schumacher
  • Process for preparing chelating ion exchanger resins and the use thereof for the extraction of metals
    Patent number: 5290453
    Abstract: The invention relates to a process for preparing complex-forming ion exchanger resins which contain 8-hydroxyquinoline groups and can be prepared from carrier materials containing amino groups reactive with aldehydes, and aldehydes, 8-hydroxyquinoline and/or 8-hydroxyquinoline derivatives, and to the use thereof for the selective extraction of metals from aqueous solutions.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: March 1, 1994
    Assignee: Schering Aktiengesellschaft
    Inventors: Michael Richter, Oliver Schumacher