Patents by Inventor Klaus R. Schell

Klaus R. Schell 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 preparation of a rabies vaccine and vaccine obtained by this process
    Patent number: 4255520
    Abstract: A method for preparing a rabies vaccine wherein rabies viruses are multiplied in poultry embryos, the heads of the embryos are harvested and the cell extract containing the rabies antigens is separated therefrom for differential centrifugation and density gradient centrifugation, the separated antigen is further processed using conventional methods. This process results in a highly selective concentration of antigens and the production of viruses having a very high activity and freedom from contaminating proteins.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: March 10, 1981
    Assignee: Schweizerisches Serum-und Impfinstitut and Institut zur Erforschung der Infektionskrankheiten
    Inventor: Klaus R. Schell