Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8051908 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2011-11-08 |
| 7975762 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2011-07-12 |
| 7977282 | Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin | 2011-07-12 |