Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12253289 | Serially arranged circulating cryocooler system | Santhosh K. Gandla | 2025-03-18 |
| 12104596 | Helium compressor system with unmodified scroll compressor | — | 2024-10-01 |
| 11149992 | Dual helium compressors | Eric Seitz, Ralph C. Longsworth | 2021-10-19 |
| 9581360 | Gas balanced cryogenic expansion engine | Ralph C. Longsworth, John Borchers | 2017-02-28 |
| 8978400 | Air cooled helium compressor | Ralph C. Longsworth | 2015-03-17 |
| 8776534 | Gas balanced cryogenic expansion engine | Ralph C. Longsworth, John Borchers | 2014-07-15 |
| 8187370 | Horizontal bulk oil separator | Ralph C. Longsworth | 2012-05-29 |
| 7674099 | Compressor with oil bypass | — | 2010-03-09 |