Patents by Inventor David M. Pharr

David M. Pharr 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).

  • Mannitol oxidoreductase isolated from vascular plants
    Patent number: 5268288
    Abstract: A mannitol oxidoreductase is isolated from vascular plants which is NAD.sup.+ dependent and which converts mannitol to mannose. A preferred source of the mannitol oxidoreductase is Apium graveolens, particularly Apium graveolens L. var. rapaceum (Mill.) Gaud. (celeriac) and Apium graveolens L. var. dulce (Mill.) Pers. (celery). DNA encoding of the mannitol oxidoreductase may be used in the production of the enzyme.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: December 7, 1993
    Assignee: North Carolina State University
    Inventors: David M. Pharr, Johan M. H. Stoop
  • Altered brining properties of produce by a method of pre-brining exposure of the fresh produce to oxygen or carbon dioxide
    Patent number: 4352827
    Abstract: Fresh whole produce is placed in a container and continuously purged for about 30 to 120 minutes with oxygen or carbon dioxide gas. The container is then filled with a brine solution and the produce allowed to stand for a period of about 2-24 hours, thus resulting in superior pickled produce.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: October 5, 1982
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Henry P. Fleming, David M. Pharr, Roger L. Thompson