Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6119778 | Method for recovering methane from a solid carbonaceous subterranean formation | Dan Yee, Rajen Puri | 2000-09-19 |
| 5566755 | Method for recovering methane from a solid carbonaceous subterranean formation | Dan Yee, Rajen Puri | 1996-10-22 |
| 5566756 | Method for recovering methane from a solid carbonaceous subterranean formation | Joseph J. Chaback, Dan Yee, Richard F. Volz, Jr., Rajen Puri | 1996-10-22 |
| 5439054 | Method for treating a mixture of gaseous fluids within a solid carbonaceous subterranean formation | Joseph J. Chaback, Dan Yee, Richard F. Volz, Jr., Rajen Puri | 1995-08-08 |
| 5388641 | Method for reducing the inert gas fraction in methane-containing gaseous mixtures obtained from underground formations | Dan Yee, Rajen Puri | 1995-02-14 |
| 4756367 | Method for producing natural gas from a coal seam | Rajen Puri, Dan Yee | 1988-07-12 |