Patents by Inventor Robert L. Dillenbeck, III

Robert L. 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).

  • Method for controlling the set time of cement
    Patent number: 5613558
    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 to 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: June 2, 1995
    Date of Patent: March 25, 1997
    Assignee: BJ Services Company
    Inventor: Robert L. Dillenbeck, III