Issued Patents All Time
Showing 25 most recent of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8668466 | Variable displacement reciprocating pump | — | 2014-03-11 |
| 8511887 | Straight through cement mixer | — | 2013-08-20 |
| 8215823 | Straight through cement mixer | — | 2012-07-10 |
| 8192070 | Straight through cement mixer | — | 2012-06-05 |
| 7811064 | Variable displacement reciprocating pump | — | 2010-10-12 |
| 7614276 | Method for determining absolute density of cement slurry | — | 2009-11-10 |
| 7600414 | Method for determining absolute density of cement slurry | — | 2009-10-13 |
| 7581872 | Gel mixing system | — | 2009-09-01 |
| 7434473 | Flow through pressure transducer | — | 2008-10-14 |
| 7419296 | Gel mixing system | — | 2008-09-02 |
| 7223013 | First in first out hydration tanks | — | 2007-05-29 |
| 7029165 | Automatically adjusting annular jet mixer | — | 2006-04-18 |
| 6994100 | Metering valve | — | 2006-02-07 |
| 6802638 | Automatically adjusting annular jet mixer | — | 2004-10-12 |
| 6789565 | Metering valve | — | 2004-09-14 |
| 6749330 | Cement mixing system for oil well cementing | — | 2004-06-15 |
| 6189386 | Method of using a microscopic digital imaging strain gauge | Fang Chen, Anthony M. Waas, Everett Kuo, Howard Kiel Plummer, Jr. | 2001-02-20 |
| 6070906 | Wheeled ski and equipment carrying device | — | 2000-06-06 |
| 5920383 | Microscopic digital imaging strain gauge | Fang Chen, Anthony M. Waas, Everett Kuo, Howard Kiel Plummer, Jr. | 1999-07-06 |
| 5829103 | Pencil holder for soft baseball type hats | — | 1998-11-03 |
| 5571281 | Automatic cement mixing and density simulator and control system and equipment for oil well cementing | — | 1996-11-05 |
| 5426137 | Method for continuously mixing fluids | — | 1995-06-20 |
| 5393224 | Ignitor assembly for power burner furnace | William G. Hansen, Edward D. Hildreth, Jr. | 1995-02-28 |
| 5382411 | Apparatus and method for continuously mixing fluids | — | 1995-01-17 |
| 5355951 | Method of evaluating oil or gas well fluid process | Gary D. Arnold, Leonard R. Case, Mark A. Clark, Gary E. Folmnsbee, Jerry L. Gammill +4 more | 1994-10-18 |