Patents by Inventor Helena V. Mathews

Helena V. Mathews 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: 9206452
    Abstract: Disclosed are methods for obtaining a natural product preparation with reduced glucosinolate contamination from a plant of Brassicaceae. The methods can include cultivating a plant callus from a plant capable of producing a desired natural product, selecting a callus with reduced glucosinolate production, and cultivating the selected callus in a liquid medium. The method can also include recovering the natural product from the culture. Also disclosed are methods for obtaining cabbage anthocyanin with reduced glucosinolate contamination. The methods can include cultivating a red cabbage plant callus with reduced glucosinolate production in a liquid medium to obtain a suspension culture and cultivating the suspension culture in a medium lacking a nitrogen source. The method can also include recovering the anthocyanin with reduced glucosinolate contamination from the culture. Finally, several specific low-glucosinolate cell lines are described.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: December 8, 2015
    Inventors: Helena V. Mathews, Sung-Yong Yoon, Mylavarapu Venkatramesh
  • Patent number: 8962327
    Abstract: Disclosed are methods for obtaining blue anthocyanin pigments and compositions including such pigments. This blue anthocyanin is present at an acidic pH (where anthocyanins are most stable) and may be used as a natural color additive. The methods can include cultivating a plant callus from a plant capable of producing anthocyanin in which the callus is treated with a blue anthocyanin-generating agent at a concentration sufficient to generate callus with blue anthocyanin pigments. The method can also include recovering the blue anthocyanin pigments from the culture. In an example, the blue anthocyanin-generating agent is ammonium molybdate.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: February 24, 2015
    Assignee: DianaPlantSciences, S.A.S.
    Inventors: Sung-Yong Yoon, Helena V. Mathews
  • Publication number: 20140051135
    Abstract: Disclosed are methods for obtaining a natural product preparation with reduced glucosinolate contamination from a plant of Brassicaceae. The methods can include cultivating a plant callus from a plant capable of producing a desired natural product, selecting a callus with reduced glucosinolate production, and cultivating the selected callus in a liquid medium. The method can also include recovering the natural product from the culture. Also disclosed are methods for obtaining cabbage anthocyanin with reduced glucosinolate contamination. The methods can include cultivating a red cabbage plant callus with reduced glucosinolate production in a liquid medium to obtain a suspension culture and cultivating the suspension culture in a medium lacking a nitrogen source. The method can also include recovering the anthocyanin with reduced glucosinolate contamination from the culture. Finally, several specific low-glucosinolate cell lines are described.
    Type: Application
    Filed: October 24, 2013
    Publication date: February 20, 2014
    Applicant: DIANAPLANTSCIENCES, INC.
    Inventors: Helena V. Mathews, Sung-Yong Yoon, Mylavarapu Venkatramesh
  • Patent number: 8642340
    Abstract: Disclosed are methods for obtaining a natural product preparation with reduced glucosinolate contamination from a plant of Brassicaceae. The methods can include cultivating a plant callus from a plant capable of producing a desired natural product, selecting a callus with reduced glucosinolate production, and cultivating the selected callus in a liquid medium. The method can also include recovering the natural product from the culture. Also disclosed are methods for obtaining cabbage anthocyanin with reduced glucosinolate contamination. The methods can include cultivating a red cabbage plant callus with reduced glucosinolate production in a liquid medium to obtain a suspension culture and cultivating the suspension culture in a medium lacking a nitrogen source. The method can also include recovering the anthocyanin with reduced glucosinolate contamination from the culture. Finally, several specific low-glucosinolate cell lines are described.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: February 4, 2014
    Assignee: Dianaplantsciences, Inc.
    Inventors: Helena V. Mathews, Sung-Yong Yoon, Mylavarapu Venkatramesh
  • Patent number: 8053637
    Abstract: Reported herein are methods for obtaining stably transformed callus in Taxus media ‘Hicksii’, including particularly methods that involve using needles, stem, or bark peel as explant material for transformation. Also provided are descriptions of several promoter activities in directing reporter gene expression in Taxus media cells, in particular cells in suspension cultures, callus and needles. Transgenic plants (e.g., Taxus plants), plant cells, cell lines, and tissues (including seeds) are also provided, in particular those that express one or more enzymes in a paclitaxel biosynthesis pathway.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: November 8, 2011
    Assignee: Dianaplantsciences, Inc.
    Inventors: Helena V. Mathews, Vaka S. Reddy, Allan H. Lammers
  • Publication number: 20110251408
    Abstract: Disclosed are methods for obtaining a natural product preparation with reduced glucosinolate contamination from a plant of Brassicaceae. The methods can include cultivating a plant callus from a plant capable of producing a desired natural product, selecting a callus with reduced glucosinolate production, and cultivating the selected callus in a liquid medium. The method can also include recovering the natural product from the culture. Also disclosed are methods for obtaining cabbage anthocyanin with reduced glucosinolate contamination. The methods can include cultivating a red cabbage plant callus with reduced glucosinolate production in a liquid medium to obtain a suspension culture and cultivating the suspension culture in a medium lacking a nitrogen source. The method can also include recovering the anthocyanin with reduced glucosinolate contamination from the culture. Finally, several specific low-glucosinolate cell lines are described.
    Type: Application
    Filed: December 17, 2009
    Publication date: October 13, 2011
    Applicant: DIANAPLANTSCIENCES, INC.
    Inventors: Helena V. Mathews, Sung-Yong Yoon, Mylavarapu Venkatramesh
  • Publication number: 20100016565
    Abstract: Flavonoids are obtained from plants that overexpress an ANT1 gene compared to wild-type plants. The plant may be a transgenic plant that contains a transformation vector that causes the overexpression of ANT1. Alternatively, the plant can be selectively bred to have an allele of or mutation in an endogenous ANT1 gene that causes the overexpression of ANT1 compared to plants lacking the allele or mutation.
    Type: Application
    Filed: August 3, 2009
    Publication date: January 21, 2010
    Inventors: Karin A. Connors, Helena V. Mathews, Xing Liang (Alex) Liu, Colby G. Caldwell
  • Publication number: 20090007298
    Abstract: Reported herein are methods for obtaining stably transformed callus in Taxus media ‘Hicksii’, including particularly methods that involve using needles, stem, or bark peel as explant material for transformation. Also provided are descriptions of several promoter activities in directing reporter gene expression in Taxus media cells, in particular cells in suspension cultures, callus and needles. Transgenic plants (e.g., Taxus plants), plant cells, cell lines, and tissues (including seeds) are also provided, in particular those that express one or more enzymes in a paclitaxel biosynthesis pathway.
    Type: Application
    Filed: January 3, 2007
    Publication date: January 1, 2009
    Inventors: Helena V. Mathews, Vaka S. Reddy, Allan H. Lammers
  • Patent number: 7304207
    Abstract: The present invention is directed to a novel plant phenotype, designated Anthocyanin 1 (ANT1), a nucleic acid sequence expressed in plants demonstrating the ANT1 phenotype and the corresponding amino acid sequence. Also provided are plant cells and plants that exhibit modified ANT1 expression.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: December 4, 2007
    Assignee: Exelixis, Inc.
    Inventors: Karin A. Connors, Helena V. Mathews, Xing Liang Liu, Colby G. Caldwell
  • Patent number: 7034138
    Abstract: The present invention is directed to a novel plant phenotype, designated Anthocyanin 1 (ANT1), a nucleic acid sequence expressed in plants demonstrating the ANT1 phenotype and the corresponding amino acid sequence. Also provided are plant cells and plants that exhibit modified ANT1 expression.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: April 25, 2006
    Assignee: Exelixis Plant Sciences, Inc.
    Inventors: Karen Connors, Helena V. Mathews, Xing-Liang Liu
  • Publication number: 20030226174
    Abstract: The present invention is directed to a novel plant phenotype, designated Anthocyanin 1 (ANT1), a nucleic acid sequence expressed in plants demonstrating the ANT1 phenotype and the corresponding amino acid sequence. Also provided are plant cells and plants that exhibit modified ANT1 expression.
    Type: Application
    Filed: April 4, 2003
    Publication date: December 4, 2003
    Inventors: Karin A. Connors, Helena V. Mathews, Xing Liang Liu, Colby G. Caldwell
  • Patent number: 6642438
    Abstract: The present invention is directed to a melon actin promoter capable of providing expression of heterologous genes, and nucleic acid constructs, vectors, transformation methods, transgenic plant cells, and transgenic plants comprising said promoter.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: November 4, 2003
    Assignee: Exelixis Plant Sciences, Inc.
    Inventors: Stephanie K. Clendennen, Jill A. Kellogg, Chau B. Phan, Helena V. Mathews, Nancy M. Webb
  • Publication number: 20030182690
    Abstract: The present invention is directed to banana fruit-associated promoters, a melon actin promoter and banana fusion promoters capable of providing expression of heterologous genes in addition to heterologous nucleic acid constructs, vectors, transformation methods, transgenic plant cells and transgenic plants comprising such promoters. The invention is also directed to methods for screening plant promoters in various types of plant tissue using a transient expression assay.
    Type: Application
    Filed: May 6, 2003
    Publication date: September 25, 2003
    Inventors: Stephanie K. Clendennen, Jill A. Kellogg, Chau B. Phan, Helena V. Mathews, Nancy M. Webb
  • Patent number: 6563023
    Abstract: The present invention is directed to a novel plant phenotype, designated CURLY (CUR), a nucleic acid sequence expressed in plants demonstrating the CUR phenotype and the corresponding amino acid sequence. Also provided are plant cells and plants that exhibit modified CUR expression.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: May 13, 2003
    Assignee: Agrinomics, LLC
    Inventors: Alex Liu, Jill Van Winkle, Susan M. Bovee-Picciano, Stanley R. Bates, Helena V. Mathews, Ry Wagner
  • Publication number: 20020133848
    Abstract: The present invention is directed to a novel plant phenotype, designated Anthocyanin 1 (ANT1), a nucleic acid sequence expressed in plants demonstrating the ANT1 phenotype and the corresponding amino acid sequence. Also provided are plant cells and plants that exhibit modified ANT1 expression.
    Type: Application
    Filed: October 29, 2001
    Publication date: September 19, 2002
    Inventors: Karin Connors, Helena V. Mathews, Xing-Liang Liu
  • Publication number: 20020010950
    Abstract: The present invention is directed to a novel plant phenotype, designated CURLY (CUR), a nucleic acid sequence expressed in plants demonstrating the CUR phenotype and the corresponding amino acid sequence. Also provided are plant cells and plants that exhibit modified CUR expression.
    Type: Application
    Filed: June 5, 2001
    Publication date: January 24, 2002
    Inventors: Alex Liu, Jill Van Winkel, Susan M. Bovee-Picciano, Stanley R. Bates, Helena V. Mathews, Ry Wagner
  • Patent number: 6127182
    Abstract: An efficient micropropagation system for fruit-bearing trees has been developed for rapid clonal multiplication of large numbers of shoots within a short time. The micropropagation system provides for transformation and vegetative propagation of fruit-bearing tree shoots to produce uniform populations of transgenic fruit-bearing trees.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: October 3, 2000
    Assignee: Agritope, Inc.
    Inventors: Venkata R. Bommineni, Helena V. Mathews
  • Patent number: 6054635
    Abstract: The present invention is directed to the identification and isolation of a promoter region from a raspberry genome. The promoter is operably linked, in a native raspberry genome, to the coding region of a raspberry E4 gene. The raspberry E4 gene promoter of the invention is capable of regulating moderate level, constitutive expression of a heterologous plant gene under its control. The invention is further directed to chimeric genes, cassette vectors, kits, transgenic plants, and methods employing a raspberry E4 promoter.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: April 25, 2000
    Assignee: Agritope, Inc.
    Inventors: Richard K. Bestwick, Jill A. Kellogg, Helena V. Mathews
  • Patent number: 5750870
    Abstract: An efficient transformation system for plants has been developed that yields high transformation efficiencies and pure transgenic plants. Genomic integration of transgenes was confirmed by genomic DNA hybridization analysis. Pure transgenic plants have been successfully established in soil.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: May 12, 1998
    Assignee: Agritope, Inc.
    Inventors: Helena V. Mathews, Richard Keith Bestwick, Adolph J. Ferro