Patents by Inventor Siao-Kun Wan Welsh

Siao-Kun Wan Welsh 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).

  • Safe Mutant Viral Vaccines
    Publication number: 20080286302
    Abstract: The present invention provides safe vaccines and methods of preparing such vaccines. The vaccines of the present invention contain at least two live mutant viruses of the same family or nucleic acid molecules encoding such viruses, wherein each of the two viruses or the encoding nucleic acids contains a mutation that confers a desirable phenotype and the mutations in the viruses reside in the same genomic site such that the mutant viruses cannot recombine with each other to eliminate the mutations.
    Type: Application
    Filed: April 4, 2008
    Publication date: November 20, 2008
    Applicants: PFIZER INC., PFIZER PRODUCTS INC.
    Inventors: Siao-Kun Wan Welsh, Jay Gregory Calvert, Michael K. O'Hara, Xuemei Cao