Patents by Inventor Yi Guo Zhang

Yi Guo Zhang 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).

  • Culture of undifferentiated chicken cells
    Patent number: 7422897
    Abstract: A method of producing undifferentiated avian cells expressing an embryonic stem cell phenotype. The method includes the steps of collecting avian gonadal cells including primordial germ cells from an avian embryo after the formation of the primitive streak; depositing the avian gonadal cells in contact with a preconditioned feeder matrix; and growing the avian gonadal cells on the pre-conditioned feeder matrix in the presence of media for a time sufficient to produce an avian cell culture consisting essentially of undifferentiated avian cells expressing an embryonic stem cell phenotype.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: September 9, 2008
    Assignee: North Carolina State University
    Inventors: James N. Petitte, Yi Guo Zhang
  • Method of producing an undifferentiated avian cell culture using avian primordial germ cells
    Publication number: 20010021528
    Abstract: A method of producing undifferentiated avian cells expressing an embryonic stem cell phenotype. The method includes the steps of collecting avian gonadal cells comprising primordial germ cells from an avian embryo after the formation of the primitive streak; depositing the avian gonadal cells in contact with a preconditioned feeder matrix; and growing the avian gonadal cells on the pre-conditioned feeder matrix in the presence of media for a time sufficient to produce an avian cell culture consisting essentially of undifferentiated avian cells expressing an embryonic stem cell phenotype.
    Type: Application
    Filed: January 8, 2001
    Publication date: September 13, 2001
    Inventors: James N. Petitte, Yi Guo Zhang