Patents by Inventor Gabriel W. Ostroot

Gabriel W. Ostroot 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).

  • Thixotropic cementing compositions
    Patent number: 3959003
    Abstract: A thixotropic cementing composition for use in oil and gas wells comprises a hydraulic cement slurry including as an additive a complex reaction product of a water soluble carboxyalkyl, hydroxyalkyl or mixed carboxyalkyl hydroxyalkyl ether of cellulose, and a polyvalent metal salt, for example a reaction product of hydroxyethylcellulose and zirconyl chloride.
    Type: Grant
    Filed: July 20, 1973
    Date of Patent: May 25, 1976
    Assignee: Halliburton Company
    Inventors: Gabriel W. Ostroot, Jiten Chatterji