Patents by Inventor Jonathan Stephens

Jonathan Stephens 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).

  • Attenuated bacteria useful in vaccines
    Publication number: 20050054075
    Abstract: The invention provides strains of bacteria, especially enterotoxigenic E. coli, attenuated by mutations in the genes encoding enterotoxins (LT, ST, EAST1) and optionally further attenuated by deletion of additional chromosomal genes. In addition the invention provides strains of attenuated bacteria expressing immunogenic but non-toxic variants of one or more of these enterotoxins. These bacteria are useful as a vaccine against diarrhoeal disease.
    Type: Application
    Filed: September 11, 2002
    Publication date: March 10, 2005
    Inventors: Arthur Turner, Judith Greenwood, Jonathan Stephens, Juliet Beavis, Michael Darsley