Issued Patents All Time
Showing 51–64 of 64 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6360524 | Oxygen separator designed to be integrated with a gas turbine and method of separating oxygen | Raymond Francis Drnevich, Christian Friedrich Gottzmann | 2002-03-26 |
| 6295838 | Cryogenic air separation and gas turbine integration using heated nitrogen | Raymond Francis Drnevich, Nancy Jean Lynch, Kevin William Mahoney | 2001-10-02 |
| 6293084 | Oxygen separator designed to be integrated with a gas turbine and method of separating oxygen | Raymond Francis Drnevich, Christian Friedrich Gottzmann | 2001-09-25 |
| 6279344 | Cryogenic air separation system for producing oxygen | Raymond Francis Drnevich | 2001-08-28 |
| 6205813 | Cryogenic rectification system for producing fuel and high purity methane | James J. Maloney, Raymond Francis Drnevich | 2001-03-27 |
| 6192706 | Cryogenic system for producing carbon monoxide | Thomas John Bergman, Jr., John Fredric Billingham, Michael Robert Couche | 2001-02-27 |
| 6192707 | Cryogenic system for producing enriched air | Raymond Francis Drnevich | 2001-02-27 |
| 6190632 | Method and apparatus for the production of ammonia utilizing cryogenic rectification | Raymond Francis Drnevich | 2001-02-20 |
| 6174348 | Nitrogen system for regenerating chemical solvent | M. Mushtaq Ahmed, Raymond Francis Drnevich | 2001-01-16 |
| 6079223 | Cryogenic air separation system for producing moderate purity oxygen and moderate purity nitrogen | Vijayaraghavan Srinivasan, Andrew Chun-Pong Lau, Michael James Lockett | 2000-06-27 |
| 6045602 | Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification | Raymond Francis Drnevich | 2000-04-04 |
| 6023945 | Annular column for cryogenic rectification | Kenneth Kai Wong, John Billingham, Dante Patrick Bonaquist, Bayram Arman, Raymond Francis Drnevich +1 more | 2000-02-15 |
| 5946942 | Annular column for cryogenic rectification | Kenneth Kai Wong, John Billingham, Dante Patrick Bonaquist, Bayram Arman, Raymond Francis Drnevich +1 more | 1999-09-07 |
| 5881570 | Cryogenic rectification apparatus for producing high purity oxygen or low purity oxygen | Raymond Francis Drnevich, Ravindra F. Pahade | 1999-03-16 |