Patents by Inventor David Hallahan

David Hallahan 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).

  • CIS-PRENYLTRANSFERASES FROM PLANTS
    Publication number: 20080096276
    Abstract: This invention pertains to nucleic acid fragments encoding plant proteins that are homologs to the cis-prenyltransferases UPP synthase from the bacterium Micrococcus luteus or Dedol-PP synthase from yeast Saccharomyces cerevisiae. More specifically, this invention pertains to cis-prenyltransferase homologs from wheat, grape, soybean, rice, African daisy, rubber tree latex and pot marigold.
    Type: Application
    Filed: August 23, 2007
    Publication date: April 24, 2008
    Applicant: PIONEER HI-BRED INTERNATIONAL, INC.
    Inventors: David Hallahan, Christopher Coldren, Dennis Flint, Hong Wang
  • INSECT REPELLENT COMPOUND
    Publication number: 20070231357
    Abstract: Dihydronepetalactone, a minor natural constituent of the essential oil of catmints (Nepeta spp.) such as Nepeta cataria, has been identified as an effective insect repellent compound. Synthesis of dihydronepetalactone may be achieved by hydrogenation of nepetalactone, the major constituent of catmint essential oils. This compound, which also has fragrance properties, may be used commercially for its insect repellent properties.
    Type: Application
    Filed: June 8, 2007
    Publication date: October 4, 2007
    Inventor: DAVID HALLAHAN
  • Cis-prenyltransferases from the Rubber-Producing Plants Russian Dandelion (Taraxacum Kok-saghyz) and Sunflower (Helianthus Annus)
    Publication number: 20070199099
    Abstract: This invention pertains to nucleic acid fragments encoding plant cis-prenyltransferases. More specifically, this invention pertains to a cis-prenyltransferase homolog from latex of the rubber-producing plant species Taraxacum kok-saghyz (russian dandelion) and a cis-prenyltransferase homolog from the rubber-producing plant species Helianthus annus (sunflower).
    Type: Application
    Filed: April 12, 2007
    Publication date: August 23, 2007
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: David Hallahan, Natalie Keiper-Hrynko
  • Method for making insect repellent composition
    Publication number: 20060240079
    Abstract: Dihydronepetalactone, a minor natural constituent of the essential oil of catmints (Nepeta spp.) such as Nepeta cataria, has been identified as an effective insect repellent compound. Synthesis of dihydronepetalactone may be achieved by hydrogenation of nepetalactone, the major constituent of catmint essential oils. This compound, which also has fragrance properties, may be used commercially for its insect repellent properties, and methods for making an composition thereof are disclosed.
    Type: Application
    Filed: June 26, 2006
    Publication date: October 26, 2006
    Inventors: David Hallahan, Leo Manzer
  • Cis-prenyltransferases from the rubber-producing plants russian dandelion (taraxacum kok-saghyz) and sunflower (helianthus annus)
    Publication number: 20060225144
    Abstract: This invention pertains to nucleic acid fragments encoding plant cis-prenyltransferases. More specifically, this invention pertains to a cis-prenyltransferase homolog from latex of the rubber-producing plant species Taraxacum kok-saghyz (russian dandelion) and a cis-prenyltransferase homolog from the rubber-producing plant species Helianthus annus (sunflower).
    Type: Application
    Filed: November 12, 2003
    Publication date: October 5, 2006
    Inventors: David Hallahan, Natalie Keiper-Hrynko
  • Insect repellent compounds
    Publication number: 20050112166
    Abstract: Dihydronepetalactone, a minor natural constituent of the essential oil of catmints (Nepeta spp.) such as Nepeta cataria, has been identified as an effective insect repellent compound. Synthesis of dihydronepetalactone may be achieved by hydrogenation of nepetalactone, the major constituent of catmint essential oils. This compound, which also has fragrance properties, may be used commercially for its insect repellent properties.
    Type: Application
    Filed: October 27, 2004
    Publication date: May 26, 2005
    Inventor: David Hallahan
  • Insect repellent compounds
    Publication number: 20050069568
    Abstract: Dihydronepetalactone, a minor natural constituent of the essential oil of catmints (Nepeta spp.) such as Nepeta cataria, has been identified as an effective insect repellent compound. Synthesis of dihydronepetalactone may be achieved by hydrogenation of nepetalactone, the major constituent of catmint essential oils. This compound, which also has fragrance properties, may be used commercially for its insect repellent properties.
    Type: Application
    Filed: October 13, 2004
    Publication date: March 31, 2005
    Inventor: David Hallahan