Patents by Inventor Sawsan E. El-Morshidy

Sawsan E. El-Morshidy 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).

  • Production of the E. coli LT-B enterotoxin subunit in S. typhi
    Patent number: 5079165
    Abstract: Methods and compositions are provided for the cloning and expression of plasmids bearing genes coding for the non-toxic subunit of the heat-laible enterotoxin (LT-B) of E. coli. These plasmids may be cloned into stable avirulent strains of Salmonella typhi and used to make oral bivalent vaccines. Such vaccines may be used to prevent typhoid fever and cholera-like enterotoxin-induced diarrheal disease.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: January 7, 1992
    Assignee: Praxis Biologics, Inc.
    Inventors: John D. Clements, Sawsan E. El-Morshidy