Issued Patents 1997
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701763 | Cryogenic hybrid system for producing low purity oxygen and high purity nitrogen | Henry Edward Howard | 1997-12-30 |
| 5682766 | Cryogenic rectification system for producing lower purity oxygen and higher purity oxygen | Nancy Jean Lynch | 1997-11-04 |
| 5682765 | Cryogenic rectification system for producing argon and lower purity oxygen | Nancy Jean Lynch | 1997-11-04 |
| 5678427 | Cryogenic rectification system for producing low purity oxygen and high purity nitrogen | Susan Marie Sattan | 1997-10-21 |
| 5669236 | Cryogenic rectification system for producing low purity oxygen and high purity oxygen | John Fredric Billingham, Michael James Lockett | 1997-09-23 |
| 5666828 | Cryogenic hybrid system for producing low purity oxygen and high purity oxygen | Henry Edward Howard, Paul Louis Just | 1997-09-16 |
| 5666824 | Cryogenic rectification system with staged feed air condensation | — | 1997-09-16 |
| 5664438 | Cryogenic side column rectification system for producing low purity oxygen and high purity nitrogen | Susan Marie Sattan | 1997-09-09 |
| 5655388 | Cryogenic rectification system for producing high pressure gaseous oxygen and liquid product | Robert A. Beddome, Michael Yijian Jin | 1997-08-12 |
| 5628207 | Cryogenic Rectification system for producing lower purity gaseous oxygen and high purity oxygen | Henry Edward Howard | 1997-05-13 |
| 5611219 | Air boiling cryogenic rectification system with staged feed air condensation | — | 1997-03-18 |