Patents by Inventor Dongmei Xu

Dongmei 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).

  • Cloning of cytochrome P450 genes from
    Patent number: 7855318
    Abstract: The present invention relates to p450 enzymes and nucleic acid sequences encoding p450 enzymes in Nicotiana, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: December 21, 2010
    Assignee: U.S. Smokeless Tobacco Company
    Inventor: Dongmei Xu
  • CLONING OF CYTOCHROME P450 GENES FROM NICOTIANA
    Publication number: 20100261192
    Abstract: The present invention relates to p450 enzymes and nucleic acid sequences encoding p450 enzymes in Nicotiana, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Application
    Filed: June 23, 2010
    Publication date: October 14, 2010
    Applicant: U.S. SMOKELESS TOBACCO COMPANY
    Inventor: Dongmei Xu
  • Cloning of cytochrome p450 genes from
    Patent number: 7812227
    Abstract: The present invention relates to p450 enzymes and nucleic acid sequences encoding p450 enzymes in Nicotiana, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: October 12, 2010
    Assignee: U.S. Smokeless Tobacco Company
    Inventor: Dongmei Xu
  • NICOTIANA NUCLEIC ACID MOLECULES AND USES THEREOF
    Publication number: 20100235945
    Abstract: The present invention features Nicotiana nucleic acid sequences such as sequences encoding constitutive, or ethylene or senescence induced polypeptides, in particular cytochrome p450 enzymes, in Nicotiana plants and methods for using these nucleic acid sequences and plants to alter desirable traits, for example by using breeding protocols.
    Type: Application
    Filed: April 7, 2010
    Publication date: September 16, 2010
    Applicant: U.S. SMOKELESS TOBACCO COMPANY
    Inventors: Dongmei Xu, Mark T. Nielsen
  • Nicotiana Nucleic Acid Molecules and Uses Thereof
    Publication number: 20100235952
    Abstract: The present invention features Nicotiana nucleic acid sequences such as sequences encoding constitutive, or ethylene or senescence induced polypeptides, in particular cytochrome p450 enzymes, in Nicotiana plants and methods for using these nucleic acid sequences and plants to alter desirable traits, for example by using breeding protocols.
    Type: Application
    Filed: April 19, 2010
    Publication date: September 16, 2010
    Applicant: U.S. SMOKELESS TOBACCO COMPANY, a Delaware corporation
    Inventors: Dongmei Xu, Mark T. Nielsen
  • Nicotiana Nucleic Acid Molecules and Uses Thereof
    Publication number: 20100235938
    Abstract: The present invention features Nicotiana nucleic acid sequences such as sequences encoding constitutive, or ethylene or senescence induced polypeptides, in particular cytochrome p450 enzymes, in Nicotiana plants and methods for using these nucleic acid sequences and plants to alter desirable traits, for example by using breeding protocols.
    Type: Application
    Filed: April 19, 2010
    Publication date: September 16, 2010
    Applicant: U.S. SMOKELESS TOBACCO COMPANY
    Inventors: Dongmei Xu, Mark T. Nielsen
  • TOBACCO PLANTS HAVING A MUTATION IN A NICOTINE DEMETHYLASE GENE
    Publication number: 20100218270
    Abstract: The present invention generally relates to methods and materials involved in producing tobacco plants having reduced levels of conversion of nicotine to nornicotine. In certain embodiments, the invention is directed to mutations in a nicotine demethylase gene, tobacco plants comprising mutations in a nicotine demethylase gene, and tobacco compositions and products thereof.
    Type: Application
    Filed: May 6, 2010
    Publication date: August 26, 2010
    Applicant: U.S. SMOKELESS TOBACCO COMPANY
    Inventors: Dongmei Xu, Mark T. Nielsen, Yanxin Shen
  • nucleic acid molecules and uses thereof
    Patent number: 7700834
    Abstract: The present invention features Nicotiana nucleic acid sequences such as sequences encoding constitutive, or ethylene or senescence induced polypeptides, in particular cytochrome p450 enzymes, in Nicotiana plants and methods for using these nucleic acid sequences and plants to alter desirable traits, for example by using breeding protocols.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: April 20, 2010
    Assignee: U.S. Smokless Tobacco Company
    Inventors: Dongmei Xu, Mark T. Nielsen
  • Tobacco nicotine demethylase genomic clone and uses thereof
    Patent number: 7700851
    Abstract: The present invention features tobacco nicotine demethylase nucleic acid and amino acid sequences, tobacco plants and plant components containing such sequences, including tobacco plants and plant components having reduced expression or altered enzymatic activity of nicotine demethylase, methods of use of nicotine demethylase sequences to create plants having altered levels of nornicotine or N?-nitrosonornicotine (“NNN”) or both relative to a control plant, as well as tobacco articles having reduced levels of nornicotine or NNN.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: April 20, 2010
    Assignee: U.S. Smokeless Tobacco Company
    Inventor: Dongmei Xu
  • TOBACCO PLANTS HAVING REDUCED NICOTINE DEMETHYLASE ACTIVITY
    Publication number: 20100012137
    Abstract: The present invention generally relates to methods and materials involved in producing tobacco plants having reduced levels of conversion of nicotine to nornicotine. In certain embodiments, the invention is directed to mutations in a nicotine demethylase gene, tobacco plants comprising mutations in a nicotine demethylase gene, and tobacco compositions and products thereof. In other embodiments, the invention is directed toward nicotine demethylase RNA interference, tobacco plants comprising a nicotine demethylase RNA interference transgene, and tobacco compositions and products thereof.
    Type: Application
    Filed: June 15, 2009
    Publication date: January 21, 2010
    Applicant: U.S. SMOKELESS TOBACCO COMPANY
    Inventors: Dongmei Xu, Mark T. Nielsen, Yanxin Shen
  • IDENTIFICATION AND USE OF CYTOCHROME P450 NUCLEIC ACID SEQUENCES FROM TOBACCO
    Publication number: 20080182241
    Abstract: The present invention relates to P450 enzymes and nucleic acid sequences encoding P450 enzymes in plants, more specifically tobacco, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Application
    Filed: April 16, 2007
    Publication date: July 31, 2008
    Inventor: Dongmei XU
  • CLONING OF CYTOCHROME P450 GENES FROM NICOTIANA
    Publication number: 20080076126
    Abstract: The present invention relates to P450 enzymes and nucleic acid sequences encoding P450 enzymes in Nicotiana, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Application
    Filed: April 16, 2007
    Publication date: March 27, 2008
    Applicant: U.S. SMOKELESS TOBACCO COMPANY
    Inventor: Dongmei Xu
  • METHOD OF SCREENING FOR CYTOCHROME P450S
    Publication number: 20070292871
    Abstract: The present invention relates to p450 enzymes and nucleic acid sequences encoding p450 enzymes in Nicotiana, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Application
    Filed: March 30, 2007
    Publication date: December 20, 2007
    Applicant: U.S. Smokeless Tobacco Manufacturing Limited Partnership
    Inventor: Dongmei Xu
  • TOBACCO PLANTS HAVING A MUTATION IN A NICOTINE DEMETHYLASE GENE
    Publication number: 20070199097
    Abstract: The present invention generally relates to methods and materials involved in producing tobacco plants having reduced levels of conversion of nicotine to nornicotine. In certain embodiments, the invention is directed to mutations in a nicotine demethylase gene, tobacco plants comprising mutations in a nicotine demethylase gene, and tobacco compositions and products thereof.
    Type: Application
    Filed: December 15, 2006
    Publication date: August 23, 2007
    Applicant: U.S. SMOKELESS TOBACCO COMPANY
    Inventors: Dongmei Xu, Mark Nielsen, Yanxin Shen
  • Nicotiana nucleic acid molecules and uses thereof
    Publication number: 20060041949
    Abstract: The present invention features Nicotiana nucleic acid sequences such as sequences encoding constitutive, or ethylene or senescence induced polypeptides, in particular cytochrome p450 enzymes, in Nicotiana plants and methods for using these nucleic acid sequences and plants to alter desirable traits, for example by using breeding protocols.
    Type: Application
    Filed: April 27, 2005
    Publication date: February 23, 2006
    Applicant: U.S. Smokeless Tobacco
    Inventors: Dongmei Xu, Mark Nielsen
  • Cloning of cytochrome p450 genes from nicotiana
    Publication number: 20060037096
    Abstract: The present invention relates to p450 enzymes and nucleic acid sequences encoding p450 enzymes in Nicotiana, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Application
    Filed: September 3, 2004
    Publication date: February 16, 2006
    Inventor: Dongmei Xu
  • Tobacco nicotine demethylase genomic clone and uses thereof
    Publication number: 20050223442
    Abstract: The present invention features tobacco nicotine demethylase nucleic acid and amino acid sequences, tobacco plants and plant components containing such sequences, including tobacco plants and plant components having reduced expression or altered enzymatic activity of nicotine demethylase, methods of use of nicotine demethylase sequences to create plants having altered levels of nornicotine or N?-nitrosonornicotine (“NNN”) or both relative to a control plant, as well as tobacco articles having reduced levels of nornicotine or NNN.
    Type: Application
    Filed: April 19, 2005
    Publication date: October 6, 2005
    Inventor: Dongmei Xu
  • Cloning of cytochrome p450 genes from Nicotiana
    Publication number: 20050132444
    Abstract: The present invention relates to p450 enzymes and nucleic acid sequences encoding p450 enzymes in Nicotiana, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Application
    Filed: September 17, 2004
    Publication date: June 16, 2005
    Inventor: Dongmei Xu
  • Duplicated cassava vein mosaic virus enhancers and uses thereof
    Publication number: 20050101774
    Abstract: The invention features duplicated enhancer domains and enhancer cassettes. The invention also features expression constructs having one or more duplicated enhancer domains and a promoter under the regulation of the duplicated enhancer domains. The expression construct is useful for increasing the expression of any nucleic acid molecule that is operably linked to the expression construct. Accordingly, the invention also features a method for expressing a nucleic acid molecule through the use of an expression construct of the present invention.
    Type: Application
    Filed: July 23, 2003
    Publication date: May 12, 2005
    Inventors: Dongmei Xu, Mark Nielsen
  • Cloning of cytochrome p450 genes from nicotiana
    Publication number: 20040162420
    Abstract: The present invention relates to p450 enzymes and nucleic acid sequences encoding p450 enzymes in Nicotiana, and methods of using those enzymes and nucleic acid sequences to alter plant phenotypes.
    Type: Application
    Filed: October 16, 2003
    Publication date: August 19, 2004
    Applicant: U.S. Smokeless Tobacco Company
    Inventor: Dongmei Xu