Patents by Inventor Colin W. Wrigley

Colin W. Wrigley 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 and apparatus for the determination of viscosity
    Patent number: 4879897
    Abstract: A method for measuring the viscosity of liquids including homogeneously mixed suspensions at known temperatures is provided. The method concerns rapidly adjusting the temperature of the liquid, stirring the liquid by rotating a stirring arrangement within the liquid at a measured speed, and measuring the power consumed by rotating the stirring arrangement in the liquid. The invention also concerns an arrangement specifically adapted for application of the method. According to both the method and arrangement, a removable vessel for the liquid is provided.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: November 14, 1989
    Assignee: Commonwealth Scientific and Industrial Research Organization
    Inventors: Rodney I. Booth, David W. Edwards, Colin W. Wrigley, Robert A. Orth