Patents by Inventor David P. J. King

David P. J. King 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).

  • Testing of viscoelastic materials
    Patent number: 5079956
    Abstract: In a method of testing a sample of viscoelastic material held under pressure between two opposing, temperature-controlled dies, the sample is subjected to an oscillatory, rotary shearing force which has a predetermined amplitude and a frequency within the range 0.001 to 2 Hz, and a torque which is indicative of the response of the sample to the shearing force is measured, at least one measurement of the torque being made when the predetermined amplitude is at least .+-.10.degree. but not greater than .+-.360.degree..
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: January 14, 1992
    Assignee: Monsanto Europe, S.A.
    Inventors: Henri A. G. Burhin, David P. J. King, Willy A. G. Spreutels