Patents by Inventor Xuexian Zhang

Xuexian 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).

  • Construction of chimera PRRSV, compositions and vaccine preparations
    Patent number: 7666585
    Abstract: Chimeric replicons of North American Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) containing the 5? sequence of an avirulent strain of PRRSV and a 3? sequence of a virulent strain of PRRSV are provided. Further provided is a method of producing attenuated PRRSV from the chimeric replicon. Also provided are compositions containing the replicon or attenuated virus. Vaccines and a method of vaccinating pigs against PRRSV are also provided.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: February 23, 2010
    Assignee: ProtaTek International, Inc.
    Inventors: Xuexian Zhang, Shi-jun Ma
  • CONSTRUCTION OF CHIMERA PRRSV, COMPOSITIONS AND VACCINE PREPARATIONS
    Publication number: 20080311143
    Abstract: Chimeric replicons of North American Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) containing the 5? sequence of an avirulent strain of PRRSV and a 3? sequence of a virulent strain of PRRSV are provided. Further provided is a method of producing attenuated PRRSV from the chimeric replicon. Also provided are compositions containing the replicon or attenuated virus. Vaccines and a method of vaccinating pigs against PRRSV are also provided.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 18, 2008
    Applicant: PROTATEK INTERNATIONAL, INC.
    Inventors: Xuexian Zhang, Shi-jun Ma