Patents by Inventor James C. Abel

James C. Abel 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).

  • Viscometer apparatus and method
    Patent number: 4878377
    Abstract: A rotary viscometer includes a rotor member having plural helically staggered mixing blades disposed on the outer surface thereof for thoroughly mixing a quantity of fluid whose viscosity is being measuring during rotation of the rotor member. The viscometer has a relatively large annular space between the rotor member and a stationary bob member, and the viscosity of hydraulic fracturing fluids for earth formations, in particular, of a type which exhibit increased viscosity at elevated temperatures, is measured by an improved method using the viscometer.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: November 7, 1989
    Assignee: Atlantic Richfield Company
    Inventor: James C. Abel