Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6185819 | Catalytic converter housing arrangement | Helmut Bauer, Olaf Herden, Werner Harsch | 2001-02-13 |
| 5653287 | Cryogenic well stimulation method | Dennis R. Wilson, Pat Lively | 1997-08-05 |
| 5464061 | Cryogenic coal bed gas well stimulation method | Dennis R. Wilson, Pat Lively | 1995-11-07 |
| 5068969 | Lighted gun sight | — | 1991-12-03 |
| 4764903 | Method and apparatus to determine permeability of rock formations adjacent a borehole | — | 1988-08-16 |
| 4495292 | Determination of expandable clay minerals at well sites | Richard Lahann | 1985-01-22 |