Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7373790 | Nitrogen rejection method and apparatus | John Oakey | 2008-05-20 |
| 7127915 | Nitrogen rejection method and apparatus | John Oakey | 2006-10-31 |
| 5980607 | Steelmaking method with oxygen from rectification of air | Martin Mayer | 1999-11-09 |
| 5666822 | Air separation | Robert Hartley | 1997-09-16 |
| 5533339 | Air separation | Paul Higginbotham, David Mark Stuart | 1996-07-09 |