Patents by Inventor Perry B. Cregan

Perry B. Cregan 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).

  • Approaches useful for the control of root nodulation of leguminous plants
    Patent number: 5229114
    Abstract: A novel approach for the increased dinitrogen fixation of leguminous plants wherein the root nodulation of the leguminous plant is controlled so as to promote nodulation by a desired bradyrhizobial strain and to inhibit nodulation of an undesired bradyrhizobial strain. Novel leguminous plant lines are provided which restrict nodulation by undesired bradyrhizobial strains while allowing nodulation of a desired bradyrhizobial strain. The plant lines are produced by conventional breeding. Recombinant bradyrhizobial strains are also provided which are characterized by a propensity for root nodulation of a predetermined leguminous plant. The recombinant bradyrhizobial strains are produced by genetic engineering.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: July 20, 1993
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Perry B. Cregan, Harold H. Keyser, Michael J. Sadowsky