Patents by Inventor Lennart P. Kaplan

Lennart P. Kaplan 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).

  • Purifying and isolating method for hepatitis virus to use in preparing vaccine
    Patent number: 4138287
    Abstract: Hepatitis B virus (detectable as its surface antigen HB.sub.s Ag) is produced in a purification preferably suitable for use in preparing a hepatitis vaccine, by contacting a crude biological starting material containing hepatitis B virus with a water-insoluble cross-linked sulfated polysaccharide gel matrix adsorbing agent to adsorb the hepatitis B virus thereon and then desorbing that virus therefrom by treating that hepatitis B virus carrying adsorbent with a desorbing agent.
    Type: Grant
    Filed: March 15, 1977
    Date of Patent: February 6, 1979
    Assignee: AB Kabi
    Inventors: Lars-Olov Andersson, Gudrun M. Einarsson, Lennart P. Kaplan