Patents by Inventor Lifang He

Lifang He 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).

  • Patent number: 6221664
    Abstract: This invention is a vaccine prepared from antigen-antibody-recombinant plasmid DNA complex. This invention is a complex vaccine composed of at least one microbial source antigen and its (their) specific antibody or specific immunoglobulin complexed with one or more recombinant DNA(s) from the gene or genes of microbes. Immunization with this complex vaccine induces enhanced specific humoral and cellular immune responses in infected individuals with immune tolerance or immune defects against specific microbial infections. The advantages of this complex vaccine are: antigen presentation via various modes; more rapid induction of immune responses; less amount of components required to induce immune responses; increased stability of the vaccine; and can be applied by injection, intranasal or other routes of topical immunization.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: April 24, 2001
    Assignee: Shanghai Medical University
    Inventors: Yumei Wen, Lifang He, Di Qu