Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6568208 | System and method for introducing low pressure reflux to a high pressure column without a pump | Zbigniew Tadeusz Fidkowski | 2003-05-27 |
| 6453840 | Damage tolerant inflatable | Ping Yin Sheu | 2002-09-24 |
| 6397631 | Air separation process | John Louis Griffiths | 2002-06-04 |
| 6357259 | Air separation method to produce gaseous product | Niranjan Sundaram, Leighton B. Wilson, Joseph Straub, Joseph P. Naumovitz | 2002-03-19 |
| 6305191 | Separation of air | — | 2001-10-23 |
| 6293126 | Air separation | — | 2001-09-25 |
| 6257019 | Production of nitrogen | John Oakey | 2001-07-10 |
| 6227005 | Process for the production of oxygen and nitrogen | Rakesh Agrawal, Donn Michael Herron | 2001-05-08 |
| 6178775 | Method and apparatus for separating air to produce an oxygen product | Joseph P. Naumovitz | 2001-01-30 |
| 6089041 | Air separation | — | 2000-07-18 |
| 6082137 | Separation of air | — | 2000-07-04 |
| 5941097 | Method and apparatus for separating air to produce an oxygen product | Joseph P. Naumovitz | 1999-08-24 |
| 5928408 | Air separation | — | 1999-07-27 |
| 5893276 | Air separation | — | 1999-04-13 |
| 5887447 | Air separation in a double rectification column | — | 1999-03-30 |
| 5878598 | Air separation | — | 1999-03-09 |
| 5868007 | Air separation | — | 1999-02-09 |
| 5862680 | Air separation | John Oakey | 1999-01-26 |
| 5852940 | Air separation | John Oakey | 1998-12-29 |
| 5819556 | Air separation | John Oakey | 1998-10-13 |
| 5813252 | Fractionation column | — | 1998-09-29 |
| 5733158 | Inflatable reversible life raft | Sang A. Lay | 1998-03-31 |
| 5692397 | Air separation | — | 1997-12-02 |
| 5692398 | Production of argon | — | 1997-12-02 |
| 5689975 | Air separation | John Oakey | 1997-11-25 |