Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8100196 | Method and apparatus for collecting drill bit performance data | Paul E. Pastusek, Eric C. Sullivan, Daryl L. Pritchard, Keith Glasgow, Tu Tien Trinh | 2012-01-24 |
| 7987925 | Method and apparatus for collecting drill bit performance data | Paul E. Pastusek, Eric C. Sullivan, Daryl L. Pritchard, R. Keith Glasgow, Jr., Tu Tien Trinh | 2011-08-02 |
| 7849934 | Method and apparatus for collecting drill bit performance data | Paul E. Pastusek, Eric C. Sullivan, Daryl L. Pritchard, Keith Glasgow, Tu Tien Trinh | 2010-12-14 |
| 7604072 | Method and apparatus for collecting drill bit performance data | Paul E. Pastusek, Eric C. Sullivan, Daryl L. Pritchard, Keith Glasgow, Tu Tien Trinh | 2009-10-20 |
| 7510026 | Method and apparatus for collecting drill bit performance data | Paul E. Pastusek, Eric C. Sullivan, Daryl L. Pritchard, Keith Glasgow, Tu Tien Trinh | 2009-03-31 |
| 7506695 | Method and apparatus for collecting drill bit performance data | Paul E. Pastusek, Eric C. Sullivan, Daryl L. Pritchard, Keith Glasgow, Tu Tien Trinh | 2009-03-24 |
| 7497276 | Method and apparatus for collecting drill bit performance data | Paul E. Pastusek, Eric C. Sullivan, Daryl L. Pritchard, Keith Glasgow, Tu Tien Trinh | 2009-03-03 |
| 7334597 | Liquid/vapor bypass valve | Michael Franklin Hughes, Stephen Seymour | 2008-02-26 |
| 6644039 | Delivery system for liquefied gas with maintained delivery tank pressure | Michael Franklin Hughes, Don Crowder, Alan P. Tiefenbrun | 2003-11-11 |
| 6364605 | Regenerative turbine pump | — | 2002-04-02 |
| D453525 | Turbine pump housing | — | 2002-02-12 |
| 6033196 | Rotary pump | Ronald A. Schuller, Joseph Ashurst | 2000-03-07 |
| 5921274 | Internal relief and bypass valve for pumps and piping systems | Ronald A. Schuller | 1999-07-13 |
| 5700140 | Pump with improved bearing arrangement for axial position control | James D. Gray, Michael Franklin Hughes | 1997-12-23 |