Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6119778 | Method for recovering methane from a solid carbonaceous subterranean formation | John P. Seidle, Rajen Puri | 2000-09-19 |
| 5566755 | Method for recovering methane from a solid carbonaceous subterranean formation | John P. Seidle, Rajen Puri | 1996-10-22 |
| 5566756 | Method for recovering methane from a solid carbonaceous subterranean formation | Joseph J. Chaback, Richard F. Volz, Jr., John P. Seidle, Rajen Puri | 1996-10-22 |
| 5454666 | Method for disposing of unwanted gaseous fluid components within a solid carbonaceous subterranean formation | Joseph J. Chaback | 1995-10-03 |
| 5439054 | Method for treating a mixture of gaseous fluids within a solid carbonaceous subterranean formation | Joseph J. Chaback, Richard F. Volz, Jr., John P. Seidle, Rajen Puri | 1995-08-08 |
| 5417286 | Method for enhancing the recovery of methane from a solid carbonaceous subterranean formation | Ian Palmer | 1995-05-23 |
| 5388642 | Coalbed methane recovery using membrane separation of oxygen from air | Rajen Puri | 1995-02-14 |
| 5388641 | Method for reducing the inert gas fraction in methane-containing gaseous mixtures obtained from underground formations | John P. Seidle, Rajen Puri | 1995-02-14 |
| 5388640 | Method for producing methane-containing gaseous mixtures | Rajen Puri | 1995-02-14 |
| 5388643 | Coalbed methane recovery using pressure swing adsorption separation | Rajen Puri | 1995-02-14 |
| 5099921 | Recovery of methane from solid carbonaceous subterranean formations | Rajen Puri, Robert S. Metcalfe | 1992-03-31 |
| 5085274 | Recovery of methane from solid carbonaceous subterranean of formations | Rajen Puri | 1992-02-04 |
| 5014788 | Method of increasing the permeability of a coal seam | Rajen Puri, Thomas S. Buxton, Om Majahan | 1991-05-14 |
| 4756367 | Method for producing natural gas from a coal seam | Rajen Puri, John P. Seidle | 1988-07-12 |