Patents by Inventor Cheryl M. Defontes

Cheryl M. Defontes 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: 11746129
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel engineered hybrid insecticidal proteins having toxicity to at least European corn borer are provided. By fusing unique combinations of complete or partial variable regions and conserved blocks of at least two different Bacillus thuringiensis (Bt) Cry proteins or a modified Cry proteins a hybrid insecticidal protein having activity against at least European corn borer is designed. Nucleic acid molecules encoding the novel hybrid proteins are also provided. Methods of making the hybrid proteins and methods of using the hybrid proteins and nucleic acids encoding the hybrid proteins of the invention, for example in transgenic plants to confer protection from insect damage are also disclosed.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: September 5, 2023
    Assignee: Syngenta Participations AG
    Inventors: Hope Hart, Jeng Shong Chen, Cheryl M. DeFontes
  • Publication number: 20210155661
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel engineered hybrid insecticidal proteins having toxicity to at least European corn borer are provided. By fusing unique combinations of complete or partial variable regions and conserved blocks of at least two different Bacillus thuringiensis (Bt) Cry proteins or a modified Cry proteins a hybrid insecticidal protein having activity against at least European corn borer is designed. Nucleic acid molecules encoding the novel hybrid proteins are also provided. Methods of making the hybrid proteins and methods of using the hybrid proteins and nucleic acids encoding the hybrid proteins of the invention, for example in transgenic plants to confer protection from insect damage are also disclosed.
    Type: Application
    Filed: February 3, 2021
    Publication date: May 27, 2021
    Applicant: Syngenta Participations AG
    Inventors: Hope HART, Jeng Shong CHEN, Cheryl M. DEFONTES
  • Publication number: 20190112343
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel engineered hybrid insecticidal proteins having toxicity to at least European corn borer are provided. By fusing unique combinations of complete or partial variable regions and conserved blocks of at least two different Bacillus thuringiensis (Bt) Cry proteins or a modified Cry proteins a hybrid insecticidal protein having activity against at least European corn borer is designed. Nucleic acid molecules encoding the novel hybrid proteins are also provided. Methods of making the hybrid proteins and methods of using the hybrid proteins and nucleic acids encoding the hybrid proteins of the invention, for example in transgenic plants to confer protection from insect damage are also disclosed.
    Type: Application
    Filed: December 7, 2018
    Publication date: April 18, 2019
    Applicant: Syngenta Participations AG
    Inventors: Hope Hart, Jeng Shong Chen, Cheryl M. Defontes
  • Patent number: 10239921
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel engineered hybrid insecticidal proteins (eHIPs) having toxicity to at least corn rootworm are provided. By fusing unique combinations of complete or partial variable regions and conserved blocks of at least two different Bacillus thuringiensis (Bt) Cry proteins or a modified Cry proteins an eHIP having activity against corn rootworm is designed. Nucleic acid molecules encoding the novel eHIPs are also provided. Methods of making the eHIPs and methods of using the eHIPs and nucleic acids encoding the eHIPs of the invention, for example in transgenic plants to confer protection from insect damage are also disclosed.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: March 26, 2019
    Assignee: Syngenta Participations AG
    Inventors: Hope Hart, Jeng Shong Chen, Cheryl M. Defontes, Frederick Walters
  • Patent number: 9522937
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel engineered hybrid insecticidal proteins (eHIPs) having toxicity to at least corn rootworm are provided. By fusing unique combinations of complete or partial variable regions and conserved blocks of at least two different Bacillus thuringiensis (Bt) Cry proteins or a modified Cry proteins an eHIP having activity against corn rootworm is designed. Nucleic acid molecules encoding the novel eHIPs are also provided. Methods of making the eHIPs and methods of using the eHIPs and nucleic acids encoding the eHIPs of the invention, for example in transgenic plants to confer protection from insect damage are also disclosed.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: December 20, 2016
    Assignee: Syngenta Participations AG
    Inventors: Hope Hart, Jeng Shong Chen, Cheryl M. Defontes, Frederick Walters
  • Publication number: 20160304568
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel engineered hybrid insecticidal proteins (eHIPs) having toxicity to at least corn rootworm are provided. By fusing unique combinations of complete or partial variable regions and conserved blocks of at least two different Bacillus thuringiensis (Bt) Cry proteins or a modified Cry proteins an eHIP having activity against corn rootworm is designed. Nucleic acid molecules encoding the novel eHIPs are also provided. Methods of making the eHIPs and methods of using the eHIPs and nucleic acids encoding the eHIPs of the invention, for example in transgenic plants to confer protection from insect damage are also disclosed.
    Type: Application
    Filed: May 6, 2016
    Publication date: October 20, 2016
    Applicant: Syngenta Participations AG
    Inventors: Hope Hart, Jeng Shong CHEN, Cheryl M. DEFONTES
  • Publication number: 20160304569
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel engineered hybrid insecticidal proteins (eHIPs) having toxicity to at least corn rootworm are provided. By fusing unique combinations of complete or partial variable regions and conserved blocks of at least two different Bacillus thuringiensis (Bt) Cry proteins or a modified Cry proteins an eHIP having activity against corn rootworm is designed. Nucleic acid molecules encoding the novel eHIPs are also provided. Methods of making the eHIPs and methods of using the eHIPs and nucleic acids encoding the eHIPs of the invention, for example in transgenic plants to confer protection from insect damage are also disclosed.
    Type: Application
    Filed: May 6, 2016
    Publication date: October 20, 2016
    Applicant: Syngenta Participations AG
    Inventors: Hope Hart, Jeng Shong CHEN, Cheryl M. DEFONTES
  • Patent number: 8759620
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, transgenic maize plants comprising nucleic acid molecules encoding modified Cry3A toxins having increased toxicity to western corn rootworm are provided. Such modified Cry3A toxins, into which a non-naturally occurring protease recognition site is inserted, are expressed at levels in transgenic plants to inhibit insect feeding damage and cause insect mortality.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: June 24, 2014
    Assignee: Syngenta Participations AG
    Inventors: Jeng Shong Chen, Cheryl M. Defontes
  • Publication number: 20140090104
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel engineered hybrid insecticidal proteins (eHIPs) having toxicity to at least corn rootworm are provided. By fusing unique combinations of complete or partial variable regions and conserved blocks of at least two different Bacillus thuringiensis (Bt) Cry proteins or a modified Cry proteins an eHIP having activity against corn rootworm is designed. Nucleic acid molecules encoding the novel eHIPs are also provided. Methods of making the eHIPs and methods of using the eHIPs and nucleic acids encoding the eHIPs of the invention, for example in transgenic plants to confer protection from insect damage are also disclosed.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 27, 2014
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventors: Hope HART, Jeng Shong CHEN, Cheryl M. DEFONTES, Frederick WALTERS
  • Publication number: 20130260994
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, transgenic maize plants comprising nucleic acid molecules encoding modified Cry3A toxins having increased toxicity to western corn rootworm are provided. Such modified Cry3A toxins, into which a non-naturally occurring protease recognition site is inserted, are expressed at levels in transgenic plants to inhibit insect feeding damage and cause insect mortality.
    Type: Application
    Filed: June 12, 2013
    Publication date: October 3, 2013
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventors: Jeng Shong CHEN, Cheryl M. DEFONTES
  • Patent number: 8247369
    Abstract: Methods for making a modified Cry3A toxin are disclosed. Such methods include the insertion of a protease recognition site that is recognized by a gut protease of a target insect, such as corn rootworm, into at least one position of a Cry3A toxin so that a modified Cry3A toxin is thus designed. The coding sequence of the modified Cry3A toxin may be transformed into a host cell and the host cell grown under conditions that allow the host cell to produce the modified Cry3A toxin. The host cell may be a plant cell and the plant may be comprised in a transgenic plant. Thus, the transgenic plant may be used to produce the modified Cry3A toxin.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: August 21, 2012
    Assignee: Syngenta Participations AG
    Inventors: Eric Chen, Cheryl M. Defontes