Patents by Inventor Roloff Johannsen

Roloff Johannsen 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).

  • Immunologic determination method
    Patent number: 4166106
    Abstract: A method for determininng a reagent capable of immunologic reaction by direct or indirect test methods, wherein an antigen is contacted with the Fc fragment of an immune globulin prior to contacting it with an antibody having no specificity to said Fc fragment, whereby unspecific linkages arre decreased.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: August 28, 1979
    Assignee: Behringwerke Aktiengesellschaft
    Inventors: Hans-Harald Sedlacek, Roloff Johannsen, Friedrich-Robert Seiler
  • Tanned thrombocytes
    Patent number: 4157383
    Abstract: The invention provides tanned thrombocytes, a process for preparing them and a diagnostic agent containing them to make evident antibodies of thrombocytes.
    Type: Grant
    Filed: October 13, 1976
    Date of Patent: June 5, 1979
    Assignee: Behringwerke Aktiengesellschaft
    Inventors: Hans-Harald Sedlacek, Roloff Johannsen, Fritz Seiler, Hermann Karges