Patents by Inventor Maurice Lalonde

Maurice Lalonde 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).

  • DNA probes for the detection of arbuscular endomycorrhizal fungi
    Patent number: 5434048
    Abstract: The present invention relates to oligonucleotide probes useful for determining the presence in a sample of arbuscular endomycorrhizal fungi. These probes are derived from nuclear genes coding for ribosomal RNA of arbuscular endomycorrhizal fungi.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: July 18, 1995
    Assignee: Universite Laval
    Inventors: Luc Simon, Maurice Lalonde
  • Method for the isolation of symbiotic microorganisms from host plants using an osmium tetraoxide fixative
    Patent number: 4366245
    Abstract: Symbiotic microorganisms such as nitrogen fixing bacteria and phosphorus-providing fungi are isolated from nodules and mycorrhiza on the roots of host plants by sterilizing the surface and subsurface areas of root tissue with an aqueous solution of a fixative containing osmium tetraoxide. The osmium tetraoxide is highly soluble in water, and volatilizes at room temperature to form a vapor which penetrates subsurface air pockets in root tissues to kill contaminating microorganisms. The osmium tetraoxide also provides a visual indicator of its progress through plant tissue by a progressive darkening of such tissue from the surface of root samples toward their centers. In this manner, the sterilization can be halted before the centrally located causitive bacteria is destroyed.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: December 28, 1982
    Inventor: Maurice Lalonde