Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6152054 | Method and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissions | Robert A. Ashworth, Todd A. Melick, Todd M. Sommer | 2000-11-28 |
| 5988081 | Method and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissions | Robert A. Ashworth, Todd A. Melick, Todd M. Sommer | 1999-11-23 |