Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7926432 | Low NOx cyclone furnace steam generator | George H. Harth, III, Manvil O. Dahl, Steven W. Burge, Mitchell W. Hopkins | 2011-04-19 |
| 6021724 | Cyclone furnace for retrofit applications | Manvil O. Dahl, Hamid Farzan, John E. Granger | 2000-02-08 |
| 5878700 | Integrated reburn system for NO.sub.x control from cyclone-fired boilers | Hamid Farzan | 1999-03-09 |