Patents by Inventor Russell C. Johnson

Russell C. Johnson 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).

  • Patent number: 6697801
    Abstract: Methods of hierarchically parsing and indexing text are provided. A source text is parsed to identify first level text entities and lower level text entities wherein the lower level text entities are subsets of their parent text entities. First level text entities are assigned a first level value corresponding to their locations within the source text, and lower level text entities are assigned lower level values, subordinate to their corresponding parent level value. Multiple levels of text entity parsing and numbering may take place. The association of linguistically derived variants of the text entities with their locations takes place.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: February 24, 2004
    Assignee: Novell, Inc.
    Inventors: Michael A. Eldredge, Russell C. Johnson, Ronald P. Millet, Bruce R. Tietjen, John P. Pratt
  • Patent number: 4721617
    Abstract: A vaccine for the immunization of mammals against Lyme borreliosis (Lyme disease) is disclosed which contains an effective amount of inactivated Borrelia burgdorferi spirochetes dispersed in a physiologically-acceptable, non-toxic liquid vehicle.
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: January 26, 1988
    Assignee: Regents of the University of Minnesota
    Inventor: Russell C. Johnson
  • Patent number: 4133717
    Abstract: A process for the preparation of a special protein-free nutrient medium having unexpected efficiency in the propagation of Leptospira. The process comprises strategically admixing a modified or detoxified polysorbate fatty acid to a preformed mixture containing vitamin B.sub.12, vitamin B.sub.1, soluble manganese, magnesium and ammonium salts, and a buffer, in a water diluent adjusted to pH 6.5 to 8.5. The polysorbate fatty acid is modified or detoxified by admixture with activated charcoal followed by settling, decantation, centrifugation and filtration to remove all charcoal particles.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: January 9, 1979
    Assignee: The Regents of the University of Minnesota
    Inventors: Russell C. Johnson, Russell F. Bey
  • Patent number: D252322
    Type: Grant
    Filed: September 5, 1975
    Date of Patent: July 10, 1979
    Inventor: Russell C. Johnson