Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8479813 | Biogenic fuel gas generation in geologic hydrocarbon deposits | Verlin Dannar, Robert S. Pfeiffer, Roland P. DeBruyn, Shane Bower, Glenn Ulrich +4 more | 2013-07-09 |
| 7696132 | Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material | Robert S. Pfeiffer, Glenn Ulrich | 2010-04-13 |
| 5664010 | System and method for providing an improved telecommunications service node | Thomas Walker, Darren Goos, Raymond E. Bernritter, Robert Lee, Ross Ginsberg | 1997-09-02 |