Patents by Inventor Daniel D. Lefebvre

Daniel D. Lefebvre 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).

  • Biosynthesis of nanoparticles
    Patent number: 8465721
    Abstract: This invention provides a method of biosynthesizing nanoparticles and quantum dots. The method may comprise culturing photosynthetic cells and/or fungal cells of a multicellular fungus in a culture medium comprising one or more species of metal in ionic or non-ionic form; and one or more counter elements to the one or more species of metal, or one or more compound comprising one or more counter elements to the one or more species of metal; wherein the cells biosynthesize nanoparticles and quantum dots incorporating the metal. The invention also provides biosynthesized nanoparticles and quantum dots.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: June 18, 2013
    Assignee: Queen's University at Kingston
    Inventors: Chad D. Edwards, Daniel D. Lefebvre
  • Biosynthesis of Nanoparticles
    Publication number: 20120164062
    Abstract: This invention provides a method of biosynthesizing nanoparticles and quantum dots. The method may comprise culturing photosynthetic cells and/or fungal cells of a multicellular fungus in a culture medium comprising one or more species of metal in ionic or non-ionic form; and one or more counter elements to the one or more species of metal, or one or more compound comprising one or more counter elements to the one or more species of metal; wherein the cells biosynthesize nanoparticles and quantum dots incorporating the metal. The invention also provides biosynthesized nanoparticles and quantum dots.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 28, 2012
    Inventors: Chad D. Edwards, Daniel D. Lefebvre
  • Phosphate-deficiency inducible promoter
    Patent number: 6175060
    Abstract: This invention provides an isolated promoter which induces transcription of a gene under conditions in which phosphate is limited to an organism. Vectors, host cells, and transgenic photosynthetic organisms incorporating this promoter are also provided.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: January 16, 2001
    Assignee: Performance Plants, Inc.
    Inventors: Daniel D. Lefebvre, Mohammad A. Malboobi
  • Phosphate starvation-inducible proteins
    Patent number: 6096545
    Abstract: This invention provides proteins, especially protein kinases and glucosidases, which are expressed under conditions of phosphate deprivation. Further provided are nucleic acids and nucleic acid constructs encoding these proteins, cells containing the nucleic acids described and transgenic photosynthetic organisms with altered phosphate-inducible enzyme activity.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: August 1, 2000
    Assignee: Queen's University at Kingston
    Inventors: Daniel D. Lefebvre, Mohammed A. Malboobi
  • Plant phosphatases
    Patent number: 5977435
    Abstract: This invention provides a novel family of plant phosphatases. Further provided are nucleic acids and nucleic acid constructs encoding the genes for plant phosphatases, cells containing the nucleic acids described and transgenic photosynthetic organisms with altered phosphate metabolism.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: November 2, 1999
    Assignee: Performance Plants, Inc.
    Inventors: Daniel D. Lefebvre, Kevin S. Gellatly
  • Phosphate-deficiency inducible promoter
    Patent number: 5922564
    Abstract: This invention provides an isolated promoter which induces transcription of a gene under conditions in which phosphate is limited to an organism. Vectors, host cells, and transgenic photosynthetic organisms incorporating this promoter are also provided.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: July 13, 1999
    Assignee: Performance Plants, Inc.
    Inventors: Daniel D. Lefebvre, Mohammad A. Malboobi