Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7270182 | Earth loop installed with sonic apparatus | — | 2007-09-18 |
| 7093657 | Earth loop installed with sonic apparatus | — | 2006-08-22 |
| 7017650 | Earth loop energy systems | Gregory Tinkler, Thomas R. Amerman | 2006-03-28 |
| 6955219 | Earth loop installation with sonic drilling | — | 2005-10-18 |
| 6860320 | Bottom member and heat loops | Thomas R. Amerman | 2005-03-01 |
| 6694766 | Power generation systems with earth heat transfer | Gregory Tinkler | 2004-02-24 |
| 6672371 | Earth heat exchange system | Thomas R. Amerman | 2004-01-06 |
| 6585036 | Energy systems | Thomas R. Amerman | 2003-07-01 |
| 6276438 | Energy systems | Thomas R. Amerman | 2001-08-21 |
| 6250371 | Energy transfer systems | Thomas R. Amerman | 2001-06-26 |
| 5836393 | Pulse generator for oil well and method of stimulating the flow of liquid | — | 1998-11-17 |
| 5832604 | Method of manufacturing segmented stators for helical gear pumps and motors | Louis Alan Strihafka | 1998-11-10 |
| D350838 | Oil fire extinguishing cone | — | 1994-09-20 |
| 5238061 | Apparatus for rotating a bit in a well | Louis Alan Strihafka, Brian K. Moore | 1993-08-24 |