Issued Patents All Time
Showing 25 most recent of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12215680 | Portable, cryogenic fluid pump apparatus with associated instrumentation, conduit legs and accessories | Jiyoung Nam, Manuel Gonzalez Munoz | 2025-02-04 |
| 10227298 | Solid forms of a pharmaceutically active compound | Urs Schwitter, Ralph Diodone, Rudolf Benz, Zhongjiang Jia, Choi Duk Soon +1 more | 2019-03-12 |
| 7741250 | Wellbore servicing fluids comprising grafted homopolymers and methods of using same | Olusegun Matthew Falana | 2010-06-22 |
| 7196039 | Methods of reducing fluid loss in a wellbore servicing fluid | — | 2007-03-27 |
| 7169739 | Methods of reducing sag in non-aqueous fluids | Olusegun Matthew Falana, Wayne S. Stewart | 2007-01-30 |
| 6730637 | Reducing fluid loss in a drilling fluid | Wayne S. Stewart, Nathan E. Stacy, Kelly B. Fox, Sam B. Ledbetter, JR., Alvin Evans, Jr. | 2004-05-04 |
| 6547710 | Sulfonated rubber compositions and processes therefor and therewith | Marshall D. Bishop | 2003-04-15 |
| 6124245 | Drilling fluid additive and process therewith | — | 2000-09-26 |
| 5925182 | Stable liquid suspension compositions | Marshall D. Bishop | 1999-07-20 |
| 5922653 | Compositions and processes for treating subterranean formations | Iqbal Ahmed, Ahmad Moradi-Araghi, Wayne S. Stewart | 1999-07-13 |
| 5834533 | Stable liquid suspension compositions | Marshall D. Bishop | 1998-11-10 |
| 5693698 | Compositions comprising an acrylamide-containing polymer and process therewith | T. George Muller | 1997-12-02 |
| 5684075 | Compositions comprising an acrylamide-containing polymer and process therewith | T. George Muller | 1997-11-04 |
| 5637635 | Water dispersible thickeners comprising hydrophilic polymers coated with particulate fatty acids or the salts thereof | — | 1997-06-10 |
| 5610124 | Tin/cerium compounds for lignosulfonate processing | — | 1997-03-11 |
| 5576271 | Composition and process for stabilizing viscosity or controlling water loss of polymer-containing water based fluids | — | 1996-11-19 |
| 5532212 | Composition comprising a viscosity promoter and a magnesium compound and process using the composition | — | 1996-07-02 |
| 5502030 | Liquid additive comprising a sulfonated asphalt and processes therefor and therewith | — | 1996-03-26 |
| 5401718 | Tin/cerium compounds for lignosulfonate processing | — | 1995-03-28 |
| 5399548 | Blended drilling fluid thinner | — | 1995-03-21 |
| 5391359 | Water dispersible thickeners comprising hydrophilic polymers coated with particulate fatty acids or the salts thereof | — | 1995-02-21 |
| 5380705 | Drilling mud comprising tetrapolymer consisting of n-vinyl-2-pyrrolidone, acrylamidopropanesulfonicacid, acrylamide, and acrylic acid | Michael Stephens, Billy L. Swanson | 1995-01-10 |
| 5270382 | Compositions and applications thereof of water-soluble copolymers comprising an ampholytic imidazolium inner salt | Iqbal Ahmed, Henry L. Hsieh, Ahmad Moradi-Araghi | 1993-12-14 |
| 5204320 | Drilling mud additive comprising ferrous sulfate and poly(N-vinyl-2-pyrrolidone/sodium 2-acrylamido-2-methylpropane sulfonate) | George G. Dixon | 1993-04-20 |
| 5041630 | Well cement slurries and dispersants therefor | Michael Stephens | 1991-08-20 |