Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10208979 | Planar plate core and method of assembly | William Kwan, Gerard REIGER | 2019-02-19 |
| 8235093 | Flat plate heat and moisture exchanger | William Kwan | 2012-08-07 |
| 7708794 | Separator made of a fibrous porous material such as a felt | Francis A. L. Dullien | 2010-05-04 |
| 7374399 | Inline fan housing assemblies | — | 2008-05-20 |
| 7007740 | Adjustable flow heat recovery ventilator and method | William Kwan | 2006-03-07 |
| 6082704 | Connection collar having an adjustable damper | — | 2000-07-04 |
| 5855320 | Combined furnace and heat recovery system | — | 1999-01-05 |
| 5785117 | Air-to-air heat exchanger core | — | 1998-07-28 |
| 5632334 | Heat recovery ventilator with room air defrosting feature | Grant W. Miles | 1997-05-27 |
| D376842 | Heat recovery ventilator | John C. Franklin, Grant W. Miles | 1996-12-24 |