Patents by Inventor Mary E. Leggett

Mary E. Leggett 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).

  • Method of preparing a seed treatment composition
    Patent number: 5586411
    Abstract: Methods and compositions for increasing the availability of soluble phosphate and fixed nitrogen for legume:Rhizobium symbioses involving co-inoculating legume seeds with a phosphate-solubilizing soil fungus, Penicillium bilaii, and Rhizobium spp. prior to planting. The two types of microorganisms do not appear to compete for nutrients in the rhizosphere of legumes and the P. bilaii provides a source of available phosphorus for use by the plant without adversely affecting the nitrogen fixation ability of the Rhizobium spp.; and indeed such ability is enhanced. The invention is used to increase the efficiencies of nodulation, nitrogen fixation and legume crop production.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: December 24, 1996
    Assignees: Her Majesty the Queen in Right of Canada, Philom Bios Inc.
    Inventors: Sanford C. Gleddie, Mary E. Leggett, Wendell A. Rice, Perry E. Olsen
  • Methods and compositions for increasing the benefits of rhizobium inoculation to legume crop productivity
    Patent number: 5484464
    Abstract: Methods and compositions for increasing the availability of soluble phosphate and fixed nitrogen for legume:Rhizobium symbioses involving co-inoculating legume seeds with a phosphate-solubilizing soil fungus, Penicillium bilaii, and Rhizobium spp. prior to planting. The two types of microorganisms do not appear to compete for nutrients in the rhizosphere of legumes and the P. bilaii provides a source of available phosphorus for use by the plant without adversely affecting the nitrogen fixation ability of the Rhizobium spp.; and indeed such ability is enhanced. The invention is used to increase the efficiencies of nodulation, nitrogen fixation and legume crop production.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: January 16, 1996
    Assignees: Philom Bios, Inc.., Her Majesty the Queen in right of Canada
    Inventors: Sanford C. Gleddie, Mary E. Leggett, Wendell A. Rice, Perry E. Olsen