Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4338966 | Direct solenoid operated directional control valve | — | 1982-07-13 |
| 4318711 | Converting low BTU gas to high BTU gas | — | 1982-03-09 |
| 4261813 | Denitrogenation of oils with reduced hydrogen consumption | — | 1981-04-14 |
| 4227990 | Thermal cracking of retort oil | James D. Dearth | 1980-10-14 |
| 4226601 | Process for reducing sulfur contaminant emissions from burning coal or lignite that contains sulfur | — | 1980-10-07 |
| 4199325 | Inhibiting spontaneous combustion of coal | — | 1980-04-22 |
| 4192652 | Process for preparing sulfur-containing coal or lignite for combustion having low SO.sub.2 emissions | — | 1980-03-11 |