Patents by Inventor Werner Ritschard

Werner Ritschard 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 deproteinization of biological fluids
    Patent number: 4421653
    Abstract: There is described a deproteinizing agent comprising a water insoluble crosslinked polycarbonic acid formed by crosslinking a polymeric compound with a diamine. This deproteinizing agent is useful for deproteinizing biological fluids.
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: December 20, 1983
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Michel Le Dain, Werner Ritschard