Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6915854 | Foaming agents for use in coal seam reservoirs | Kevin W. England, J. Ernest Brown, Jerald J. Hinkel | 2005-07-12 |
| 6720290 | Foaming agents for use in coal seam reservoirs | Kevin W. England, J. Ernest Brown, Jerald J. Hinkel | 2004-04-13 |