Patents by Inventor Shujun Chang

Shujun Chang 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: 20220170033
    Abstract: Methods for transforming dicot vegetative plant organs and their composite tissues are provided.
    Type: Application
    Filed: March 26, 2020
    Publication date: June 2, 2022
    Applicants: PIONEER HI-BRED INTERNATIONAL, INC., CORTEVA AGRISCIENCE LLC
    Inventors: MAREN L ARLING, SHUJUN CHANG, WILLIAM JAMES GORDON-KAMM, NATHALIE SANYOUR-DOYEL, NAGESH SARDESAI
  • Publication number: 20210395760
    Abstract: Methods and compositions for increasing, improving or enhancing gene editing efficiency are provided. Configurations of Ochrobactrum and Agrobacterium based vector components such as CRISPR Cas endonucleases and guide RNAs are provided that improve efficiency of targeted genome modification.
    Type: Application
    Filed: October 30, 2019
    Publication date: December 23, 2021
    Applicant: PIONEER HI-BRED INTERNATIONAL, INC.
    Inventors: JYOTHI BOLAR, SHUJUN CHANG, HYEON-JE CHO, ZHAN-BIN LIU
  • Publication number: 20120266326
    Abstract: The present disclosure relates to freeze-tolerant transgenic Eucalyptus, including methodology for making and products produced there from. Following exposure to cold temperature, and compared to a control plant, the freeze-tolerant Eucalyptus displays a freeze-tolerant phenotype characterized by at least one of increased height, less leaf damage, less dieback of main stem, less crown defoliation, and/or improved tree stem form.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 18, 2012
    Inventors: Chunsheng Zhang, Brian Kwan, Shujun Chang, Peter Raymond
  • Publication number: 20120266339
    Abstract: The present disclosure relates to a new, distinct and stable variety of freeze-tolerant Eucalyptus hybrid variety. Following exposure to cold temperature, and compared to its parent plant, the freeze-tolerant hybrid variety displays increased height, less leaf damage, less dieback of main stem, less crown defoliation, and improved tree stem form.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 18, 2012
    Inventors: Chunsheng Zhang, Brian Kwan, Shujun Chang, Peter Raymond
  • Publication number: 20120137390
    Abstract: The present disclosure relates to a method for regenerating shoots from plant explants using a plant culture medium including meta-topolin. The invention also provides media and methods for regenerating plants, particularly forest trees. In particular, methods for regenerating stably transformed Eucalyptus and pine trees are provided.
    Type: Application
    Filed: May 6, 2010
    Publication date: May 31, 2012
    Inventors: Shujun Chang, Heather Gladfelter, Eric Gulledge
  • Patent number: 8053237
    Abstract: Novel plant cell signaling genes and gene products are provided. These gene, polypeptide and oligonucleotide sequences are useful in regulating plant phenotype. Moreover, these genes and gene products are useful for expression profiling of plant cell signaling genes. The invention specifically provides polynucleotide and polypeptide sequences isolated from Eucalyptus and Pinus species.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: November 8, 2011
    Assignee: Arborgen Inc.
    Inventors: Shujun Chang, Marie B. Connett, Sarah Jane Emerson, Richard L. Forster, Katrina Gause, Ilkka Havukkala, Colleen Higgins, Robert Kodrzycki
  • Patent number: 7960614
    Abstract: The present invention relates to a genotype-independent method for transforming and selecting plant explants. The transformation method includes pre-culturing the explants in the presence of an Agrobacterium inducer and exposing the transformed explants to a shoot regeneration media that accelerates shoot development. Plants generated from this transformation method are provided. In particular, methods for obtaining transgenic Eucalyptus and pine cells and regenerating stably transformed Eucalyptus and pine trees are provided. The invention also provides media, methods, and plasmids for selecting and regenerating plants, particularly forest trees.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: June 14, 2011
    Assignee: Arborgen, LLC
    Inventors: Shujun Chang, Robert D. Thomas, Levis W. Handley, Marie B. Connett, Randy L. Hamilton
  • Publication number: 20110088126
    Abstract: Novel plant cell signaling genes and gene products are provided. These gene, polypeptide and oligonucleotide sequences are useful in regulating plant phenotype. Moreover, these genes and gene products are useful for expression profiling of plant cell signaling genes. The invention specifically provides polynucleotide and polypeptide sequences isolated from Eucalyptus and Pinus species.
    Type: Application
    Filed: June 16, 2006
    Publication date: April 14, 2011
    Inventors: Shujun Chang, Marie B. Connett, Sarah Jane Emerson, Richard L. Forster, Katrina Gause, Ilkka Havukkala, Colleen Higgins, Robert Kodrzycki
  • Publication number: 20100287672
    Abstract: Novel plant cell signaling genes and gene products are provided. These gene, polypeptide and oligonucleotide sequences are useful in regulating plant phenotype. Moreover, these genes and gene products are useful for expression profiling of plant cell signaling genes. The invention specifically provides polynucleotide and polypeptide sequences isolated from Eucalyptus and Pinus species.
    Type: Application
    Filed: May 25, 2010
    Publication date: November 11, 2010
    Inventors: Shujun CHANG, Marie B. Connett, Sarah Jane Emerson, Richard L. Forster, Katrina Gause, Ilkka Havukkala, Colleen Higgins, Robert Kodrzycki
  • Patent number: 7723110
    Abstract: Novel plant cell signaling genes and gene products are provided. These gene, polypeptide and oligonucleotide sequences are useful in regulating plant phenotype. Moreover, these genes and gene products are useful for expression profiling of plant cell signaling genes. The invention specifically provides polynucleotide and polypeptide sequences isolated from Eucalyptus and Pinus species.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: May 25, 2010
    Assignee: Arborgen, LLC
    Inventors: Shujun Chang, Marie B. Connett, Sarah Jane Emerson, Richard L. Forster, Katrina Gause, Ilkka Havukkala, Colleen Higgins, Robert Kodrzycki
  • Publication number: 20070039071
    Abstract: Novel plant cell signaling genes and gene products are provided. These gene, polypeptide and oligonucleotide sequences are useful in regulating plant phenotype. Moreover, these genes and gene products are useful for expression profiling of plant cell signaling genes. The invention specifically provides polynucleotide and polypeptide sequences isolated from Eucalyptus and Pinus species.
    Type: Application
    Filed: June 16, 2006
    Publication date: February 15, 2007
    Inventors: Shujun Chang, Marie Connett, Sarah Emerson, Richard Forster, Katrina Gause, Ilkka Havukkala, Colleen Higgins, Robert Kodrzycki
  • Publication number: 20060130185
    Abstract: The present invention relates to a genotype-independent method for transforming and selecting plant explants. The transformation method includes pre-culturing the explants in the presence of an Agrobacterium inducer and exposing the transformed explants to a shoot regeneration media that accelerates shoot development. Plants generated from this transformation method are provided. In particular, methods for obtaining transgenic Eucalyptus and pine cells and regenerating stably transformed Eucalyptus and pine trees are provided. The invention also provides media, methods, and plasmids for selecting and regenerating plants, particularly forest trees.
    Type: Application
    Filed: June 7, 2004
    Publication date: June 15, 2006
    Inventors: Shujun Chang, Robert Thomas, Levis Handley, Marie Connett, Randy Hamilton
  • Publication number: 20060101537
    Abstract: The present invention relates to a method for transforming and selecting plant explants. The transformation method includes pre-culturing the explants in the presence of an Agrobacterium inducer and exposing the transformed explants to a shoot regeneration media that accelerates shoot development. Plants generated from this transformation method are provided. In particular, methods for obtaining transgenic E. grandis×E. urophylla cells and therefrom regenerating stably transformed E. grandis×E. urophylla trees are provided. The invention also provides media, methods, and plasmids for selecting and regenerating plants.
    Type: Application
    Filed: June 22, 2005
    Publication date: May 11, 2006
    Inventors: Shujun Chang, Robert Thomas, Levis Handley, Marie Connett, Randy Hamilton
  • Publication number: 20060101536
    Abstract: The present invention relates to a method for transforming and selecting plant explants. The transformation method includes pre-culturing the explants in the presence of an Agrobacterium inducer and exposing the transformed explants to a shoot regeneration media that accelerates shoot development. Plants generated from this transformation method are provided. In particular, methods for obtaining transgenic E. urophylla and E. saligna cells and therefrom regenerating stably transformed E. urophylla and E. saligna trees are provided. The invention also provides media, methods, and plasmids for selecting and regenerating plants.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 11, 2006
    Inventors: Shujun Chang, Robert Thomas, Levis Handley, Marie Connett, Randy Hamilton