Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6502636 | Methods and compositions for grouting heat exchange pipe | Jiten Chatterji, Roger S. Cromwell, Jason Glen Bell | 2003-01-07 |
| 6258160 | Methods and compositions for grouting heat exchange pipe | Jiten Chatterji, Roger S. Cromwell, Jason Glen Bell | 2001-07-10 |
| 6105674 | Composition and method for recovering lost circulation and sealing earth boreholes and cavities | James A. Nattier | 2000-08-22 |
| 5955401 | Clay-free biodegradable wellbore fluid and method for using same fluid | — | 1999-09-21 |
| 5723416 | Well servicing fluid for trenchless directional drilling | — | 1998-03-03 |