Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12416024 | Biologically enhanced oil recovery methods | Daniel Edward Connors, Jordan Andrew Bradfish, Helen Mitchell, Joseph Edward Zemetra | 2025-09-16 |
| 9434872 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2016-09-06 |
| 9057082 | Generation of methane from hydrocarbon bearing materials | James B. Dodson, Robert S. Pfeiffer, Eric L. Szaloczi, Glenn Ulrich, Jeffrey L. Weber | 2015-06-16 |
| 8794315 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2014-08-05 |
| 8715978 | Generation of hydrogen from hydrocarbon bearing materials | James B. Dodson, Robert S. Pfeiffer, Eric L. Szaloczi, Glenn Ulrich, Jeffrey L. Weber | 2014-05-06 |
| 8479813 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Verlin Dannar, Robert S. Pfeiffer, Shane Bower, Glenn Ulrich, Jeffrey L. Weber +4 more | 2013-07-09 |
| 8302683 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2012-11-06 |
| 8092559 | Generation of hydrogen from hydrocarbon bearing materials | James B. Dodson, Robert S. Pfeiffer, Eric L. Szaloczi, Glenn Ulrich, Jeffrey L. Weber | 2012-01-10 |
| 8051908 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2011-11-08 |
| 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 |
| 7975762 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2011-07-12 |
| 7845403 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2010-12-07 |
| 7640978 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2010-01-05 |
| 7426960 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Robert S. Pfeiffer, Glenn Ulrich, Gary Vanzin, Verlin Dannar, James B. Dodson | 2008-09-23 |