Patents by Inventor Frederick Walters

Frederick Walters 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: 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: 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
  • Patent number: 8309516
    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: March 26, 2008
    Date of Patent: November 13, 2012
    Assignee: Syngenta Participations AG
    Inventors: Hope Hart, Jeng S. Chen, Cheryl Stacy, Frederick Walters
  • Publication number: 20100017914
    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: March 26, 2008
    Publication date: January 21, 2010
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventors: Hope Hart, Jeng S. Chen, Cheryl Stacy, Frederick Walters
  • Publication number: 20080182796
    Abstract: Compositions and methods for controlling plant pests are disclosed. In particular, novel nucleic acid sequences encoding modified Cry3A toxins having increased toxicity to corn rootworm are provided. By inserting a protease recognition site that is recognized by a gut protease of a target insect in at least one position of a Cry3A toxin a modified Cry3A toxin having significantly greater toxicity, particularly to western and northern corn rootworm is designed.
    Type: Application
    Filed: April 30, 2007
    Publication date: July 31, 2008
    Inventors: Jeng S. Chen, Cheryl Stacy, Frederick Walters