Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5956974 | Multiple expander process to produce oxygen | Rakesh Agrawal, Yanping Zhang | 1999-09-28 |
| 5934104 | Multiple column nitrogen generators with oxygen coproduction | Zbigniew Tadeusz Fidkowski, Jeffrey A. Hopkins | 1999-08-10 |
| 5907959 | Air separation process using warm and cold expanders | Rakesh Agrawal | 1999-06-01 |
| 5901576 | Single expander and a cold compressor process to produce oxygen | Rakesh Agrawal, Yanping Zhang | 1999-05-11 |
| 5865041 | Distillation process using a mixing column to produce at least two oxygen-rich gaseous streams having different oxygen purities | Rakesh Agrawal, Stephen J. Cook | 1999-02-02 |
| 5701764 | Process to produce moderate purity oxygen using a double column plus an auxiliary low pressure column | Rakesh Agrawal, Zbigniew Tadeusz Fidkowski | 1997-12-30 |
| 5592832 | Process and apparatus for the production of moderate purity oxygen | Rakesh Agrawal, Jianguo Xu | 1997-01-14 |
| 5590543 | Production of ultra-high purity oxygen from cryogenic air separation plants | Rakesh Agrawal, Thomas R. White | 1997-01-07 |
| 5122174 | Boiling process and a heat exchanger for use in the process | Swaminathan Sunder, Douglas L. Bennett, Keith A. Ludwig, Edwin C. Rogusky | 1992-06-16 |
| 5017204 | Dephlegmator process for the recovery of helium | Gerry N. Gottier | 1991-05-21 |
| 4504295 | Nitrogen rejection from natural gas integrated with NGL recovery | Ruth A. Davis, James W. Pervier, Harvey L. Vines | 1985-03-12 |