Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8613838 | System for making a usable hydrocarbon product from used oil | John G. Schulz, Benjamin Cowart | 2013-12-24 |
| 8398847 | Method for making a usable hydrocarbon product from used oil | John G. Schulz, Benjamin Cowart | 2013-03-19 |