Patents by Inventor Siao-Kun Wan Welch

Siao-Kun Wan Welch 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).

  • CHIMERIC PESTIVIRUSES
    Publication number: 20170151321
    Abstract: The present invention relates to chimeric pestiviruses having utility as immunogenic compositions and vaccines. Also described herein are methods and kits for treating or preventing the spread of bovine viral diarrhea virus infection, as well as methods and kits for differentiating between vaccinated and wild-type infected animals.
    Type: Application
    Filed: February 13, 2017
    Publication date: June 1, 2017
    Inventors: Yugang Luo, Siao-Kun Wan Welch, Ying Yuan, Robert Gerard Ankenbauer
  • Chimeric pestiviruses
    Patent number: 9567375
    Abstract: The present invention relates to chimeric pestiviruses having utility as immunogenic compositions and vaccines. Also described herein are methods and kits for treating or preventing the spread of bovine viral diarrhea virus infection, as well as methods and kits for differentiating between vaccinated and wild-type infected animals.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: February 14, 2017
    Assignee: Zoetis Services LLC
    Inventors: Yugang Luo, Siao-Kun Wan Welch, Ying Yuan, Robert Gerard Ankenbauer
  • Safe mutant viral vaccines
    Patent number: 7754222
    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: Grant
    Filed: April 4, 2008
    Date of Patent: July 13, 2010
    Assignee: Pharmacia & Upjohn Company, LLC
    Inventors: Siao-Kun Wan Welch, Jay Gregory Calvert, Michael K O'Hara, Xuemei Cao
  • CHIMERIC PESTIVIRUSES
    Publication number: 20100136055
    Abstract: The present invention relates to chimeric pestiviruses having utility as immunogenic compositions and vaccines. Also described herein are methods and kits for treating or preventing the spread of bovine viral diarrhea virus infection, as well as methods and kits for differentiating between vaccinated and wild-type infected animals.
    Type: Application
    Filed: November 24, 2009
    Publication date: June 3, 2010
    Applicant: Pfizer Inc.
    Inventors: Yugang Luo, Siao-Kun Wan Welch, Ying Yuan, Robert Gerard Ankenbauer
  • Safe mutant viral vaccines
    Patent number: 7361357
    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 adds 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: Grant
    Filed: July 16, 2004
    Date of Patent: April 22, 2008
    Assignees: Pfizer Inc., Pfizer Products Inc.
    Inventors: Siao-Kun Wan Welch, Jay Gregory Calvert, Michael K. O'Hara, Xuemei Cao