Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9033042 | Forming bitumen barriers in subsurface hydrocarbon formations | John Michael Karanikas, Gary L. Beer, Robert Irving McNeil, III, Augustinus Wilhelmus Maria Roes, Robert Charles Ryan +1 more | 2015-05-19 |
| 8701768 | Methods for treating hydrocarbon formations | Gary L. Beer, Richard Pollard, Augustinus Wilhelmus Maria Roes | 2014-04-22 |
| 7635024 | Heating tar sands formations to visbreaking temperatures | John Michael Karanikas, Tulio Rafael Colmenares, Etuan Zhang, Augustinus Wilhelmus Maria Roes, Robert Charles Ryan +3 more | 2009-12-22 |
| 5885441 | Steam conversion process and catalyst | Pedro Pereira, Roger Marzin, Luis Zacarias, Jose Cordova, Jose Carrazza | 1999-03-23 |