Patents by Inventor Robert Lee Dillenbeck, III

Robert Lee Dillenbeck, III 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).

  • Composition for controlling the set time of cement
    Patent number: 5658380
    Abstract: An oil and gas well cementing composition and method are shown utilizing hydraulic cement, water a cement hydration retarder and an additive which is effective over a selected time period degrade the retarder. The additive is a controlled release oxidizer which releases nascent oxygen over time to gradually oxidize the cement hydration retarder, thereby providing a single cement slurry design for cementing pipes for oil and gas wells where wide temperature differentials exist between the two ends of the pipe.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: August 19, 1997
    Inventor: Robert Lee Dillenbeck, III