Patents by Inventor Alexander U. Bertland, II

Alexander U. Bertland, II 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).

  • Pres2+S hepatitis B vaccine derived from plasma
    Patent number: 5030720
    Abstract: Hepatitis B PreS2+S antigen is isolated from plasma by adsorption on an affinity chromatography column, elution with a chaotropic agent and treatment with concentrated urea at an elevated temperature. The process retains all or substantially all of the preS2+S antigen.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: July 9, 1991
    Assignee: Merck & Co., Inc.
    Inventors: Alexander U. Bertland, II, William J. Miller