Patents by Inventor Loretta V. Willis

Loretta V. Willis 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).

  • cDNA clone coding for Venezuelan equine encephalitis virus and attenuating mutations thereof
    Patent number: 5185440
    Abstract: A DNA comprises a cDNA clone coding for an infectious Venezuelan Equine Encephalitis Virus RNA transcript and a heterologous promoter sequence positioned upstream from the cDNA clone and operatively associated therewith. A method of making a live attenuated Togavirus useful as a vaccine, and cDNA clones which code for attenuated Togaviruses, is also disclosed.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: February 9, 1993
    Assignee: North Carolina State University
    Inventors: Nancy L. Davis, Loretta V. Willis, Robert E. Johnston, Jonathan F. Smith