Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7182170 | Gerotor and bearing system for whirling mass orbital vibrator | James F. Brett, Robert Victor Westermark, Joey Earl Turner, Jr., Samuel Scott Lovin, Will J. Myers | 2007-02-27 |
| 6691778 | Methods of performing downhole operations using orbital vibrator energy sources | David M. Weinberg, Dennis R. Wilson | 2004-02-17 |
| 6478969 | Shear separation method and system | John D. Brantley, Mark F. Hurwitz, Stephen A. Geibel, Mahmoud Reyad | 2002-11-12 |
| 6244839 | Pressure compensated variable displacement internal gear pumps | Yong Fong Tay | 2001-06-12 |
| 5346016 | Apparatus and method for centralizing pipe in a wellbore | Dennis R. Wilson, Wilber R. Moyer, Larry K. Moran | 1994-09-13 |
| 5321213 | Downhole epicyclic motion orbital seismic source | Paul L. Buller, John B. Sinton, Marvin E. Janda | 1994-06-14 |
| 5285023 | Downhole hydraulic rotary seismic source | Marvin E. Janda | 1994-02-08 |
| 5229552 | Method and apparatus for the downhole measurement of elastic rock properties | — | 1993-07-20 |
| 5229554 | Downhole electro-hydraulic vertical shear wave seismic source | — | 1993-07-20 |
| 5176219 | Method of sealing holes in the ground | Mark P. DiStefano, C. Michael Swindoll | 1993-01-05 |
| 5172450 | Shaft cleaning and decontamination apparatus | C. Michael Swindoll, Mark P. DiStefano | 1992-12-22 |
| 5166909 | Method of seismic exploration using elliptically polarized shear waves | John S. Gergely | 1992-11-24 |
| 5128900 | Multi-component seismic vibratory source for use in marine environments | — | 1992-07-07 |
| 5128906 | Deep penetrating shear-wave seismic vibratory source for use in marine environments | — | 1992-07-07 |
| 5080189 | Electro-hydraulic dipole vibrator | — | 1992-01-14 |
| 5027918 | Sidewall locking downhole seismic signal detector | — | 1991-07-02 |
| 4959818 | Apparatus for generating elliptically polarized shear waves | — | 1990-09-25 |
| 4922472 | Apparatus for inducing elliptically polarized shear waves in an earth medium | John S. Gergely, Robert T. Baumel, John E. Strecker | 1990-05-01 |
| 4881210 | Torsionally rigid support apparatus for marine seismic transducer | Wilbur J. Myers | 1989-11-14 |
| 4874061 | Downhole orbital seismic source | — | 1989-10-17 |
| 4871045 | Telescoping tube omni-directional shear wave vibrator | — | 1989-10-03 |
| 4867096 | Tubular shear wave source | — | 1989-09-19 |
| 4862990 | Downhole seismic sources | — | 1989-09-05 |
| 4853906 | Apparatus for generating elliptically polarized shear waves | — | 1989-08-01 |
| 4785430 | Hydraulic vibrator with wide dynamic range | — | 1988-11-15 |