Patents by Inventor Glen D. Graham

Glen D. Graham 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).

  • Freeze-drying process for the preparation of meningococcus vaccine without degradation of potency
    Patent number: 4134214
    Abstract: The purified Group A polysaccharide antigen isolated from N. meningitidis for vaccination against this type of bacterial meningitidis is prepared from an isotonic ratio of aqueous sodium chloride solution freeze-dried at temperatures of from -20.degree. C. to -30.degree. C. This low temperature lyophilization dries the sodium chloride polysaccharide menstrum without loss of molecular weight, i.e., potency.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: January 16, 1979
    Assignee: Merck & Co., Inc.
    Inventors: Glen D. Graham, William A. Sklarz