Patents by Inventor Andree H. Harrington

Andree H. Harrington 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).

  • Lightweight particulate cementitious materials and process for producing same
    Patent number: 5207830
    Abstract: Disclosed is a process of manufacturing a lightweight particulate cementitious composition particularly adapted to the sorption of liquids comprising adding to a foamed cement slurry a particle forming agent, and aging the treated foamed slurry for a period of time sufficient for the particles to form and harden for subsequent handling. The bulk density, particle size distribution, and concentration of the agent are selected such that the cementitious composition has the desired density and such that at least 65% of the particles obtained after aging have the desired particle size.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: May 4, 1993
    Assignee: Venture Innovations, Inc.
    Inventors: Jack C. Cowan, Roy F. House, Andree' H. Harrington
  • Reduction of seepage losses in well working compositions
    Patent number: 5147852
    Abstract: The invention provides well working compositions containing a particulate additive to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: September 15, 1992
    Assignee: Venture Innovations, Inc.
    Inventors: Jack C. Cowan, Roy F. House, Andree H. Harrington
  • Seepage loss reducing additive for well working compositions and uses thereof
    Patent number: 5076944
    Abstract: The invention provides well working fluid compositions containing cotton burrs ground to certain particle size ranges to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions. Also provided is a seepage loss additive comprising the ground cotton burrs in combination with one or more of ground oat hulls, ground corn cobs, hydrophobic organophilic water wettable cotton, ground citrus pulp, ground peanut shells, ground rice hulls, and ground nut shells.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: December 31, 1991
    Assignee: Venture Innovations, Inc.
    Inventors: Jack C. Cowan, Roy F. House, Andree' H. Harrington
  • Well working compositions, method of decreasing the seepage loss from such compositions, and additive therefor
    Patent number: 5071575
    Abstract: The invention provides well working fluid compositions containing oat hulls ground to certain particle size ranges to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions. Also provided is a seepage loss additive comprising the ground oat hulls in combination with one or more of ground corn cobs, hydrophobic organophilic water wettable cotton, ground citrus pulp, and ground cotton burrs.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: December 10, 1991
    Assignee: Venture Innovations, Inc.
    Inventors: Roy F. House, Andree H. Harrington, Jack C. Cowan