Patents by Inventor Larrie Sweet

Larrie Sweet 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 fracturing a subterranean formation with a lightweight propping agent
    Patent number: 5188175
    Abstract: A lightweight propping agent made from kaolin clay or mixtures of kaolin clay and lightweight aggregate and having an alumina content between 25% and 40%, a specific gravity of from 2.20 to 2.60 and better conductivity than sand at pressures up to 8,000 psi.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: February 23, 1993
    Assignee: Carbo Ceramics Inc.
    Inventor: Larrie Sweet