Patents by Inventor Ewald F. Welchner

Ewald F. Welchner 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).

  • Purification of glycoproteins and immunization therewith
    Patent number: 4123343
    Abstract: A method is disclosed for the purification of the beta subunit of human chorionic gonadotrophin. Also disclosed is an antiserum composition and method of producing same using spleen immunization to obtain antiserum compositions having high antibody titers.
    Type: Grant
    Filed: June 14, 1977
    Date of Patent: October 31, 1978
    Assignee: American Home Products Corporation
    Inventors: John Krupey, Ewald F. Welchner