Walker; Thad O.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Walker; Thad O..The latest application filed is for "environmentally safe water base drilling fluid".

Company Profile

0.16.0

Walker; Thad O. - Kingwood TX
Walker; Thad O. - Humble TX
Walker; Thad O. - Houston TX

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Environmentally safe water base drilling fluid Grant 5,403,820 - Walker April 4, 1	1995-04-04
High temperature drilling fluids based on sulfonated thermoplastic polymers Grant 4,579,669 - Walker , et al. * April 1, 1	1986-04-01
Intramolecular polymer complexes - viscosifiers for high ionic strength drilling fluids Grant 4,540,496 - Peiffer , et al. September 10, 1	1985-09-10
Fast drilling invert emulsion drilling fluids Grant 4,508,628 - Walker , et al. April 2, 1	1985-04-02
Sodium styrene sulfonate-co-sodium-n-(4-sulfophenyl)-maleimide- an improved viscosity control additive Grant 4,478,727 - Turner , et al. October 23, 1	1984-10-23
Additive composition for release of stuck drill pipe Grant 4,464,269 - Walker , et al. * August 7, 1	1984-08-07
Drilling mud viscosification agents based on sulfonated ionomers Grant 4,447,338 - Lundberg , et al. May 8, 1	1984-05-08
Additive composition for release of stuck drill pipe Grant 4,436,638 - Walker , et al. March 13, 1	1984-03-13
Additive composition for release of stuck drill pipe Grant 4,427,564 - Brownawell , et al. January 24, 1	1984-01-24
Drilling fluids based on a mixture of sulfonated thermoplastic polymer and an amine-treated clay Grant 4,425,463 - Walker , et al. January 10, 1	1984-01-10
Drilling fluids based on sulfonated elastomeric polymers Grant 4,425,462 - Turner , et al. January 10, 1	1984-01-10
Drilling fluids based on a mixture of a sulfonated thermoplastic polymer and a sulfonated elastomeric polymer Grant 4,425,461 - Turner , et al. January 10, 1	1984-01-10
Drilling fluids containing an admixture of polyethoxylated, sulfurized fatty acids and polyalkylene glycols Grant 4,172,800 - Walker October 30, 1	1979-10-30
Drilling fluids containing polyethoxylated, sulfurized fatty alcohols Grant 4,141,840 - Walker , et al. February 27, 1	1979-02-27
Drilling fluids containing polyethoxylated tetraalkyl acetylenic diols Grant 4,053,422 - Walker October 11, 1	1977-10-11
Controlling Salt Contaminated Drilling Fluids By The Addition Of An Admixture Of A Water Soluble Chromate And Ethylene Dicarboxylic Acid Grant 3,879,299 - Walker April 22, 1	1975-04-22

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