Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6145588 | Air-to-air heat and moisture exchanger incorporating a composite material for separating moisture from air technical field | Jon E. Johnson, Ephraim E. M. Sparrow | 2000-11-14 |
| 4550773 | Heat exchanger | — | 1985-11-05 |