Patents by Inventor David A. Tyrrell

David A. Tyrrell 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).

  • Influenza vaccine
    Patent number: 5162112
    Abstract: A strain of influenza virus, especially human influenza type A or B, for use in formulating a vaccine is selected by a process which comprises isolating candidate influenza viruses in embryonated hens' eggs, determining whether they have antigenic similarities to strains which are the same except that they have been isolated and grown exclusively in animal cells, that is to say whether they are "cell-like", and selecting at least one such cell-like strain or a reassortant thereof having its HA and NA genes for the vaccine.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: November 10, 1992
    Assignee: National Research Development Corporation
    Inventors: John S. Oxford, James S. Robertson, Geoffrey C. Schild, David A. Tyrrell