Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8739902 | High-speed triple string drilling system | — | 2014-06-03 |
| 8668029 | Sonic latch mechanism | Thomas J. Oothoudt | 2014-03-11 |
| 8474547 | Isolation system for drilling systems | Thomas J. Oothoudt | 2013-07-02 |
| 8356677 | Methods of preloading a sonic drill head and methods of drilling using the same | Kristian S. Drivdahl, Todd A. Nevenner, Kenneth Carl Altrichter | 2013-01-22 |
| 8261857 | Core barrel sonic latch mechanism and methods of sonic drilling using the same | Thomas J. Oothoudt | 2012-09-11 |
| 8079647 | Vibratory milling machine having linear reciprocating motion | Jing James Yao, Thomas J. Oothoudt | 2011-12-20 |
| 8056985 | Vibratory machine | Jing James Yao, Louis E. Silay | 2011-11-15 |
| 8006782 | Sonic drill head | Kristian S. Drivdahl, Todd A. Nevenner, Kenneth Carl Altrichter | 2011-08-30 |
| 7896108 | Dual string orbital drilling system | Charles C. Able | 2011-03-01 |
| 7828393 | Continuous vibratory milling machine | Jing James Yao, Louis E. Silay | 2010-11-09 |
| 7434890 | Vibratory milling machine having linear reciprocating motion | Jing James Yao, Louis E. Silay | 2008-10-14 |
| 6371205 | Bore hole grouting apparatus and method | Patrick Joseph Langan | 2002-04-16 |
| 6109373 | Cable overshot apparatus | — | 2000-08-29 |
| 6089335 | Positive latch core barrel apparatus | — | 2000-07-18 |