Patents by Inventor Shi-Jun Ma

Shi-Jun Ma 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
  • Infectious cDNA clones of porcine reproductive and respiratory syndrome virus and expression vectors thereof
    Patent number: 7273617
    Abstract: Infectious cDNA clones of North American Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) are provided. Further provided are cDNA clones comprising genetic mutations. Also provided are vaccines comprising cDNAs, including genetically and immunologically marked vaccines for North American PRRSV.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: September 25, 2007
    Assignee: ProtaTek International, Inc.
    Inventors: Shishan Yuan, Shi-jun Ma
  • Infectious cDNA clones of porcine reproductive and respiratory syndrome virus and expression vectors thereof
    Publication number: 20050238661
    Abstract: Infectious cDNA clones of North American Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) are provided. Further provided are cDNA clones comprising genetic mutations. Also provided are vaccines comprising cDNAs, including genetically and immunologically marked vaccines for North American PRRSV.
    Type: Application
    Filed: October 29, 2004
    Publication date: October 27, 2005
    Applicant: ProtaTek International, Inc.
    Inventors: Shishan Yuan, Shi-jun Ma
  • Infectious cDNA clones of porcine reproductive and respiratory syndrome virus and expression vectors thereof
    Patent number: 6841364
    Abstract: Infectious cDNA clones of North American Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) are provided. Further provided are cDNA clones comprising genetic mutations. Also provided are vaccines comprising cDNAs, including genetically and immunologically marked vaccines for North American PRRSV.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: January 11, 2005
    Assignee: ProtaTek International, Inc.
    Inventors: Shishan Yuan, Shi-Jun Ma
  • Infectious cDNA clones of porcine reproductive and respiratory syndrome virus and expression vectors thereof
    Publication number: 20030138916
    Abstract: Infectious cDNA clones of North American Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) are provided. Further provided are cDNA clones comprising genetic mutations. Also provided are vaccines comprising cDNAs, including genetically and immunologically marked vaccines for North American PRRSV.
    Type: Application
    Filed: January 16, 2003
    Publication date: July 24, 2003
    Applicant: ProtaTek International, Inc.
    Inventors: Shishan Yuan, Shi-Jun Ma