Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5264187 | Treatment of hydrocarbons | Michael E. Olbrich, Rebecca L. Jones | 1993-11-23 |
| 5082987 | Treatment of hydrocarbons | Michael E. Olbrich, Rebecca L. Jones | 1992-01-21 |
| 4575011 | Reducing ash content of lignite | — | 1986-03-11 |
| 4370150 | Engine performance operating on field gas as engine fuel | — | 1983-01-25 |
| 4328995 | Production of lignite from underground deposits | — | 1982-05-11 |