Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11674749 | LNG production with nitrogen removal | Sylvain Vovard, Fei Chen, Mark Julian Roberts | 2023-06-13 |
| 11561049 | Coil wound heat exchanger | Mark Julian Roberts, Annemarie Ott Weist | 2023-01-24 |
| 8529674 | Pressure swing adsorption method and system with multiple-vessel beds | Sang Kook Lee, Carolyn Taylor Zelson, Mark Ephraim Levine | 2013-09-10 |
| 7879138 | Pressure swing adsorption method and system with multiple-vessel beds | Sang Kook Lee, Carolyn Taylor Zelson, Mark Ephraim Levine | 2011-02-01 |
| 7501009 | Combined cryogenic distillation and PSA for argon production | David Ross Graham, Jung Soo Choe, Donn Michael Herron, Sang Kook Lee | 2009-03-10 |
| 6709486 | Pressure swing adsorption process with controlled internal depressurization flow | Sang Kook Lee | 2004-03-23 |
| 6641645 | Vacuum swing adsorption process with controlled waste gas withdrawal | Sang Kook Lee | 2003-11-04 |