Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8783045 | Reduced input power cryogenic refrigerator | Mingyao Xu | 2014-07-22 |
| 7654096 | Reduced torque valve for cryogenic refrigerator | Mingyao Xu, Eric Seitz, Motokazu Saito | 2010-02-02 |
| 7631505 | Wearless valve for cryorefrigerator | Eric Seitz, Ralph C. Longsworth, Mingyao Xu | 2009-12-15 |
| 7568351 | Multi-stage pulse tube with matched temperature profiles | Mingyao Xu | 2009-08-04 |
| 7549295 | Three track valve for cryogenic refrigerator | — | 2009-06-23 |
| 7500366 | Refrigerator with magnetic shield | Mingyao Xu, Ralph C. Longsworth | 2009-03-10 |
| 7191600 | Fast warm up pulse tube | Ralph C. Longsworth | 2007-03-20 |
| 7114341 | Cryopump with two-stage pulse tube refrigerator | — | 2006-10-03 |
| 6629418 | Two-stage inter-phasing pulse tube refrigerators with and without shared buffer volumes | Ralph C. Longsworth | 2003-10-07 |
| 6256998 | Hybrid-two-stage pulse tube refrigerator | — | 2001-07-10 |
| 5974807 | Pulse tube refrigerator | Yoichi Matsubara, Yu Hiresaki | 1999-11-02 |
| 5642623 | Gas cycle refrigerator | Yu Hiresaki, Yoichi Matsubara | 1997-07-01 |