Patents by Inventor Joseph C. Johnson

Joseph 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).

  • Method of bonding via electrorheological adhesives
    Patent number: 4900387
    Abstract: Adhesives and coating are formulated with electrorheological materials to thicken when subjected to an electric field. The adhesives are thin and easy to apply, but thicken to prevent running while the adhesive cures or sets. A uniform bond along the joint is formed, thereby eliminating the uneven or discontinuous adhesive bonds made with conventional adhesives that reduce the strength and integrity of the joint.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: February 13, 1990
    Assignee: The Boeing Company
    Inventor: Joseph C. Johnson
  • Method of determining the nicotine content of tobacco
    Patent number: 4783418
    Abstract: A method of determining on a discrete analyzer the nicotine content of tobacco or a smoking-related product by preparing an aqueous extract of a sample of tobacco or smoking-related product, pre-reacting the extract with an acidic buffered solution of pH not more than 6 for at least two minutes, reacting the pre-reacted extract in the discrete analyzer with aniline and cyanogen bromide, measuring the intensity of yellow coloration generated, and comparing said intensity with that produced by a nicotine standard to determine the nicotine content of said sample.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: November 8, 1988
    Assignee: Imperial Tobacco Limited
    Inventors: Terence M. Long, Joseph C. Johnson, Maurice Naylor