Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8506680 | Reclamation of gaseous substances from boiler flue gas for oil recovery | Fengshan Zhang | 2013-08-13 |
| 8460444 | Equipment for pressurized adsorption of gaseous carbon dioxide from boiler flue gas for oil recovery by well injection | Fengshan Zhang | 2013-06-11 |
| 7964025 | Reclaiming carbon dioxide from boiler flue gas | Fengshan Zhang | 2011-06-21 |
| 7754102 | Method for reclaim of carbon dioxide and nitrogen from boiler flue gas | Fengshan Zhang, Yongchun Zhang | 2010-07-13 |
| 7644756 | Oil recovery by injection of steam, carbon dioxide and nitrogen | Fengshan Zhang | 2010-01-12 |