Patents by Inventor Chengjin Huang

Chengjin Huang 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).

  • Patent number: 8685412
    Abstract: The present invention relates to a novel, isolated and purified hemorrhagic feline calicivirus FCV-DD1. The invention further embraces monovalent and multivalent vaccines containing the new FCV-DD1 strain. In addition, the invention encompasses methods of protecting felines against infection or preventing disease caused by feline calicivirus alone or in addition to other pathogens that comprises administering to the felines an immunologically effective amount of the monovalent and multivalent vaccines described herein. Also, the invention concerns methods for diagnosing or detecting the hemorrhagic feline calicivirus in a susceptible host, asymptomatic carrier and the like by detecting the presence of feline calicivirus FCV-DD1 or antibodies raised or produced against feline calicivirus FCV-DD1 antigen.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: April 1, 2014
    Assignee: Boehringer Ingelheim Vetmedica, Inc.
    Inventors: Chengjin Huang, Jennifer Hess
  • Publication number: 20110318383
    Abstract: The present invention relates to a novel, isolated and purified hemorrhagic feline calicivirus FCV-DD1. The invention further embraces monovalent and multivalent vaccines containing the new FCV-DD1 strain. In addition, the invention encompasses methods of protecting felines against infection or preventing disease caused by feline calicivirus alone or in addition to other pathogens that comprises administering to the felines an immunologically effective amount of the monovalent and multivalent vaccines described herein. Also, the invention concerns methods for diagnosing or detecting the hemorrhagic feline calicivirus in a susceptible host, asymptomatic carrier and the like by detecting the presence of feline calicivirus FCV-DD1 or antibodies raised or produced against feline calicivirus FCV-DDI antigen.
    Type: Application
    Filed: September 7, 2011
    Publication date: December 29, 2011
    Inventors: Chengjin HUANG, Jennifer Hess
  • Publication number: 20090176969
    Abstract: The present invention relates to the complete biosynthetic pathway for the formation of the LL-F28249 compounds and, most importantly, the major component LL-F28249?. The purified and isolated nucleic acid molecule encoding the proteins of the biosynthetic pathway, which is isolated from a wild-type or mutant Streptomyces, is fully described in FIG. 6 to FIG. 6-39 and SEQ ID NO:1. The DNA gene cluster and its expression in a suitable host enable the efficient production of the highly active natural metabolites and semisynthetic derivatives. The invention further concerns plasmids, vectors and host cells that contain and express the novel nucleic acid molecule. Of particular interest, the entire biosynthetic pathway fits compactly in three plasmids, Cos11, Cos36 and Cos40. The invention also concerns the purified and isolated biosynthesis proteins that are encoded by the whole DNA gene cluster. Additionally, the invention involves a new efficient, biochemical method of preparing moxidectin.
    Type: Application
    Filed: March 21, 2008
    Publication date: July 9, 2009
    Applicant: Wyeth
    Inventors: Chengjin Huang, Deborah T. Chaleff, Mark E. Ruppen, Jerome Stephens
  • Patent number: 7396660
    Abstract: The present invention relates to the complete biosynthetic pathway for the formation of the LL-F28249 compounds and, most importantly, the major component LL-F28249?. The purified and isolated nucleic acid molecule encoding the proteins of the biosynthetic pathway, which is isolated from a wild-type or mutant Streptomyces, is fully described in FIG. 6 to FIG. 6-39 and SEQ ID NO:1. The DNA gene cluster and its expression in a suitable host enable the efficient production of the highly active natural metabolites and semisynthetic derivatives. The invention further concerns plasmids, vectors and host cells that contain and express the novel nucleic acid molecule. Of particular interest, the entire biosynthetic pathway fits compactly in three plasmids, Cos11, Cos36 and Cos40. The invention also concerns the purified and isolated biosynthesis proteins that are encoded by the whole DNA gene cluster. Additionally, the invention involves a new efficient, biochemical method of preparing moxidectin.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: July 8, 2008
    Assignee: Wyeth
    Inventors: Chengjin Huang, Deborah T. Chaleff, Mark E. Ruppen, Jerome Stephens
  • Publication number: 20080124359
    Abstract: The present invention relates to a novel, isolated and purified hemorrhagic feline calicivirus FCV-DD1. The invention further embraces monovalent and multivalent vaccines containing the new FCV-DD1 strain. In addition, the invention encompasses methods of protecting felines against infection or preventing disease caused by feline calicivirus alone or in addition to other pathogens that comprises administering to the felines an immunologically effective amount of the monovalent and multivalent vaccines described herein. Also, the invention concerns methods for diagnosing or detecting the hemorrhagic feline calicivirus in a susceptible host, asymptomatic carrier and the like by detecting the presence of feline calicivirus FCV-DD1 or antibodies raised or produced against feline calicivirus FCV-DD1 antigen.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 29, 2008
    Applicant: Wyeth
    Inventors: Chengjin Huang, Jennifer Hess
  • Patent number: 7306807
    Abstract: The present invention relates to a novel, isolated and purified hemorrhagic feline calicivirus FCV-DD1. The invention further embraces monovalent and multivalent vaccines containing the new FCV-DD1 strain. In addition, the invention encompasses methods of protecting felines against infection or preventing disease caused by feline calicivirus alone or in addition to other pathogens that comprises administering to the felines an immunologically effective amount of the monovalent and multivalent vaccines described herein. Also, the invention concerns methods for diagnosing or detecting the hemorrhagic feline calicivirus in a susceptible host, asymptomatic carrier and the like by detecting the presence of feline calicivirus FCV-DD1 or antibodies raised or produced against feline calicivirus FCV-DD1 antigen.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: December 11, 2007
    Assignee: Wyeth
    Inventors: Chengjin Huang, Jennifer Hess
  • Publication number: 20060057159
    Abstract: The present invention relates to a novel, isolated and purified hemorrhagic feline calicivirus FCV-DD1. The invention further embraces monovalent and multivalent vaccines containing the new FCV-DD1 strain. In addition, the invention encompasses methods of protecting felines against infection or preventing disease caused by feline calicivirus alone or in addition to other pathogens that comprises administering to the felines an immunologically effective amount of the monovalent and multivalent vaccines described herein. Also, the invention concerns methods for diagnosing or detecting the hemorrhagic feline calicivirus in a susceptible host, asymptomatic carrier and the like by detecting the presence of feline calicivirus FCV-DD1 or antibodies raised or produced against feline calicivirus FCV-DD1 antigen.
    Type: Application
    Filed: September 9, 2005
    Publication date: March 16, 2006
    Applicant: WYETH
    Inventors: Chengjin Huang, Jennifer Hess
  • Publication number: 20050003409
    Abstract: The present invention relates to the complete biosynthetic pathway for the formation of the LL-F28249 compounds and, most importantly, the major component LL-F28249?. The purified and isolated nucleic acid molecule encoding the proteins of the biosynthetic pathway, which is isolated from a wild-type or mutant Streptomyces, is fully described in FIG. 6 to FIG. 6-39and SEQ ID NO:1. The DNA gene cluster and its expression in a suitable host enable the efficient production of the highly active natural metabolites and semisynthetic derivatives. The invention further concerns plasmids, vectors and host cells that contain and express the novel nucleic acid molecule. Of particular interest, the entire biosynthetic pathway fits compactly in three plasmids, Cos11, Cos36 and Cos40. The invention also concerns the purified and isolated biosynthesis proteins that are encoded by the whole DNA gene cluster. Additionally, the invention involves a new efficient, biochemical method of preparing moxidectin.
    Type: Application
    Filed: May 13, 2004
    Publication date: January 6, 2005
    Applicant: WYETH
    Inventors: Chengjin Huang, Deborah Chaleff, Mark Ruppen, Jerome Stephens
  • Patent number: 6300118
    Abstract: The present invention pertains to the prevention or lessening of disease in cats caused by Feline Immunodeficiency Virus (FIV). Prevention or lessening of disease is understood to mean the amelioration of any symptoms, including immune system disruptions, that result from FIV infection. The invention provides for a plasmid which encodes the FIV genome where said genome has had a portion of the gag gene, specifically the p10 (nucleocapsid) coding region, or a portion thereof, deleted. This deletion prevents the production of functional or whole p10 protein, which in turn, prevents the packaging of RNA into virions produced from transfection of this plasmid into an appropriate host cell, resulting in virions which do not contain RNA. Such virions will be described as “empty” virions. The invention also encompasses host cells transformed with the plasmid which produce the empty virions, and the empty virions themselves.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 9, 2001
    Assignee: American Home Products Corporation
    Inventors: Lloyd Chavez, Terri Wasmoen, Chengjin Huang