Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8684384 | Process for cracking a heavy hydrocarbon feedstream | David B. Spicer, James M. Frye, Subramanian Annamalai | 2014-04-01 |
| 8002951 | Furnace and process for incinerating a decoke effluent in a twin-tube-plane furnace | David B. Spicer | 2011-08-23 |