Patents by Inventor Clarence J. Durborow

Clarence J. Durborow 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).

  • Packer with chemically activated sealing member and method of use thereof
    Patent number: 4137970
    Abstract: A tool, e.g., a well packer, for restricting the flow of fluid through an annulus defined by the interior walls of a fluid conduit, e.g., well casing, and the exterior of a tubular member, e.g., the packer mandrel, is disclosed. The novelty of the present invention lies in the deformable packer element of such a tool, wherein in lieu of rubber, a chemically activated material which expands upon contact with fluid in the conduit is employed to effect the desired seal. A method of using such a tool is also disclosed.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: February 6, 1979
    Assignee: The Dow Chemical Company
    Inventors: George P. Laflin, Clarence J. Durborow
  • Formation fracturing with stable foam
    Patent number: 3937283
    Abstract: Stable foam within specified quality range is used as a fracturing fluid or to extend fractures in subterranean formations.
    Type: Grant
    Filed: October 17, 1974
    Date of Patent: February 10, 1976
    Assignees: The Dow Chemical Company, Minerals Management, Inc.
    Inventors: Roland E. Blauer, Clarence J. Durborow