Patents by Inventor Zhichang Xu

Zhichang Xu 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).

  • Publication number: 20090117152
    Abstract: Provided are immunogenic and vaccine compositions and methods for their preparation and use, which compositions are effective in protecting against, minimizing the severity of, preventing, and/or ameliorating M. hyopneumoniae infection. Administration to an animal of one or two doses of an adjuvanted live avirulent M. hyopneumoniae composition disclosed herein is effective in providing immunity to the animal and protection from infection with a virulent strain of M. hyopneumoniae thereby reducing the severity of and/or preventing disease caused by one or more virulent strain of M. hyopneumoniae. Also provided are compositions, which further comprise one or more antigen such as, for example, one or more live bacteria, bacterin, toxoid, and/or virus and/or viral antigen. Exemplified are immunogenic compositions, comprising an adjuvanted live avirulent M.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 7, 2009
    Applicant: Wyeth
    Inventors: Hsien-Jue Chu, Zhichang Xu, Wumin Li, Nicole Rae Gibson
  • Publication number: 20070134269
    Abstract: The invention provides an improved Mycoplasma hyopneumoniae bacterin vaccine composition, which advantageously provides immunity from infection after a single administration. The composition comprises an inactivated Mycoplasma hyopneumoniae bacterin and an adjuvant mixture, which, in combination, provide immunity from Mycoplasma hyopneumoniae infection after a single administration, and elicit an immune response specific to Mycoplasma hyopneumoniae bacterin and including cell-mediated immunity and local (secretory IgA) immunity. In a preferred embodiment, the adjuvant mixture comprises an acrylic acid polymer, most preferably Carbopol, and a mixture of a metabolizable oil such as one or more unsaturated terpene hydrocarbons, preferably squalene or squalane, and a polyoxyethylene-polypropylene block copolymer such as Pluronic®. The vaccine composition may optionally include a preservative, preferably thimerosol and/or EDTA.
    Type: Application
    Filed: January 11, 2007
    Publication date: June 14, 2007
    Inventors: Hsien-Jue Chu, Wumin Li, Zhichang Xu
  • Patent number: 7169394
    Abstract: The invention provides an improved Mycoplasma hyopneumoniae bacterin vaccine composition, which advantageously provides immunity from infection after a single administration. The composition comprises an inactivated Mycoplasma hyopneumoniae bacterin and an adjuvant mixture, which, in combination, provide immunity from Mycoplasma hyopneumoniae infection after a single administration, and elicit an immune response specific to Mycoplasma hyopneumoniae bacterin and including cell-mediated immunity and local (secretory IgA) immunity. In a preferred embodiment, the adjuvant mixture comprises an acrylic acid polymer, most preferably CARBOPOL®, and a mixture of a metabolizable oil such as one or more unsaturated terpene hydrocarbons, preferably squalene or squalane, and a polyoxyethylene-polyoxypropylene block copolymer such as PLURONIC®. The vaccine composition may optionally include a preservative, preferably thimerosol and/or EDTA.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: January 30, 2007
    Assignee: Wyeth
    Inventors: Hsien-Jue Chu, Wumin Li, Zhichang Xu
  • Publication number: 20070020296
    Abstract: The invention provides an improved Mycoplasma hyopneumoniae bacterin vaccine composition, which advantageously provides immunity from infection after a single administration. The composition comprises an inactivated Mycoplasma hyopneumoniae bacterin and an adjuvant mixture, which, in combination, provide immunity from Mycoplasma hyopneumoniae infection after a single administration, and elicit an immune response specific to Mycoplasma hyopneumoniae bacterin and including cell-mediated immunity and local (secretory IgA) immunity. In a preferred embodiment, the adjuvant mixture comprises an acrylic acid polymer, most preferably CARBOPOL®, and a mixture of a metabolizable oil such as one or more unsaturated terpene hydrocarbons, preferably squalene or squalane, and a polyoxyethylene-polyoxypropylene block copolymer such as PLURONIC®. The vaccine composition may optionally include a preservative, preferably thimerosol and/or EDTA.
    Type: Application
    Filed: August 21, 2006
    Publication date: January 25, 2007
    Applicant: Wyeth
    Inventors: Hsien-Jue Chu, Wumin Li, Zhichang Xu
  • Publication number: 20060228373
    Abstract: The invention provides an improved Mycoplasma hyopneumoniae bacterin vaccine composition, which advantageously provides immunity from infection after a single administration. The composition comprises an inactivated Mycoplasma hyopneumoniae bacterin and an adjuvant mixture, which, in combination, provide immunity from Mycoplasma hyopneumoniae infection after a single administration, and elicit an immune response specific to Mycoplasma hyopneumoniae bacterin and including cell-mediated immunity and local (secretory IgA) immunity. In a preferred embodiment, the adjuvant mixture comprises an acrylic acid polymer, most preferably Carbopol, and a mixture of a metabolizable oil such as one or more unsaturated terpene hydrocarbons, preferably squalene or squalane, and a polyoxyethylene-polypropylene block copolymer such as Pluronic®. The vaccine composition may optionally include a preservative, preferably thimerosol and/or EDTA.
    Type: Application
    Filed: December 27, 2005
    Publication date: October 12, 2006
    Applicant: Wyeth
    Inventors: Hsien-Jue Chu, Wumin Li, Zhichang Xu
  • Patent number: 7018638
    Abstract: The invention provides an improved Mycoplasma hyopneumoniae bacterin vaccine composition, which advantageously provides immunity from infection after a single administration. The composition comprises an inactivated Mycoplasma hyopneumoniae bacterin and an adjuvant mixture, which, in combination, provide immunity from Mycoplasma hyopneumoniae infection after a single administration, and elicit an immune response specific to Mycoplasma hyopneumoniae bacterin and including cell-mediated immunity and local (secretory IgA) immunity. In a preferred embodiment, the adjuvant mixture comprises an acrylic acid polymer, most preferably CARBOPOL®, and a mixture of a metabolizable oil such as one or more unsaturated terpene hydrocarbons, preferably squalene or squalane, and a polyoxyethylene-polyoxypropylene block copolymer such as PLURONIC®. The vaccine composition may optionally include a preservative, preferably thimerosol and/or EDTA.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: March 28, 2006
    Assignee: Wyeth
    Inventors: Hsien-Jue Chu, Wumin Li, Zhichang Xu
  • Publication number: 20030017171
    Abstract: The invention provides an improved Mycoplasma hyopneumoniae bacterin vaccine composition, which advantageously provides immunity from infection after a single administration. The composition comprises an inactivated Mycoplasma hyopneumoniae bacterin and an adjuvant mixture, which, in combination, provide immunity from Mycoplasma hyopneumoniae infection after a single administration, and elicit an immune response specific to Mycoplasma hyopneumoniae bacterin and including cell-mediated immunity and local (secretory IgA) immunity. In a preferred embodiment, the adjuvant mixture comprises an acrylic acid polymer, most preferably Carbopol, and a mixture of a metabolizable oil such as one or more unsaturated terpene hydrocarbons, preferably squalene or squalane, and a polyoxyethylene-polypropylene block copolymer such as Pluronic®. The vaccine composition may optionally include a preservative, preferably thimerosol and/or EDTA.
    Type: Application
    Filed: May 17, 2002
    Publication date: January 23, 2003
    Applicant: Wyeth
    Inventors: Hsien-Jue Chu, Wumin Li, Zhichang Xu
  • Publication number: 20020131980
    Abstract: The invention provides an improved Mycoplasma hyopneumoniae bacterin vaccine composition, which advantageously provides immunity from infection after a single administration. The composition comprises an inactivated Mycoplasma hyopneumoniae bacterin and an adjuvant mixture, which, in combination, provide immunity from Mycoplasma hyopneumoniae infection after a single administration, and elicit an immune response specific to Mycoplasma hyopneumoniae bacterin and including cell-mediated immunity and local (secretory IgA) immunity. In a preferred embodiment, the adjuvant mixture comprises an acrylic acid polymer, most preferably Carbopol, and a mixture of a metabolizable oil such as one or more unsaturated terpene hydrocarbons, preferably squalene or squalane, and a polyoxyethylene-polypropylene block copolymer such as Pluronic®. The vaccine composition may optionally include a preservative, preferably thimerosol and/or EDTA.
    Type: Application
    Filed: January 8, 2002
    Publication date: September 19, 2002
    Applicant: American Home Products Corporatio
    Inventors: Hsien-Jue Chu, Wumin Li, Zhichang Xu