Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6822425 | High frequency battery charger and method of operating same | Michael Krieger, Roy Scott Vetitoe | 2004-11-23 |
| 6799993 | Portable electrical energy source | Michael Krieger | 2004-10-05 |
| 6770853 | PWM controller for DC powered heating blanket | Michael Krieger | 2004-08-03 |
| 6744021 | Microprocessor controlled heater/cooler system | Michael Krieger | 2004-06-01 |
| 6709638 | Alkylation process | Curtis Wood, Martyn E. Pfile | 2004-03-23 |
| 6673239 | Hydrocarbon purificatin system regeneration | Marvin M. Johnson | 2004-01-06 |