Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6968704 | Method and system for densifying cryogenic propellants | — | 2005-11-29 |
| 6532750 | Method and system for densifying cryogenic propellants | — | 2003-03-18 |
| RE36332 | Refrigeration of superconducting magnet system | James Pierce, Sibley C. Burnett, John R. Purcell | 1999-10-12 |
| 5697220 | Refrigeration of superconducting magnet systems | James Pierce, Sibley C. Burnett, John R. Purcell | 1997-12-16 |
| 5495718 | Refrigeration of superconducting magnet systems | James Pierce, Sibley C. Burnett, John R. Purcell | 1996-03-05 |
| 4584839 | Multi-stage cryogenic refrigerators | Jack E. Jensen, Harold Parish | 1986-04-29 |
| 4466252 | Cryopump | — | 1984-08-21 |
| 4346563 | Super critical helium refrigeration process and apparatus | — | 1982-08-31 |