Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12313318 | Low GWP cascade refrigeration system | — | 2025-05-27 |
| 12313319 | Low GWP cascade refrigeration system | — | 2025-05-27 |
| 9482443 | HFC blend refrigeration system with internal R32 blend subcooling | — | 2016-11-01 |
| 8291723 | R125 and R143A blend refrigeration system with internal R32 blend subcooling | — | 2012-10-23 |
| 6694757 | Multiple stage dehumidification and cooling system | — | 2004-02-24 |
| 6467279 | Liquid secondary cooling system | James F. Roomsburg | 2002-10-22 |
| 6321551 | Series secondary cooling and dehumidification system for indoor ice rink facilities | James F. Roomsburg | 2001-11-27 |
| 6205795 | Series secondary cooling system | James Roomburg | 2001-03-27 |
| 6170272 | Refrigeration system with inertial subcooling | — | 2001-01-09 |
| 5947420 | Kite accessory release system | — | 1999-09-07 |