Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D541402 | Smoke exhauster housing | Chao-Cheng Chiang | 2007-04-24 |
| D535381 | Smoke exhauster | Chao-Cheng Chiang | 2007-01-16 |
| 6945753 | Smoke exhauster having improved fan device | Chao-Cheng Chiang | 2005-09-20 |
| 6782885 | Smoke exhauster having forwarded fan casing | Chao-Cheng Chiang | 2004-08-31 |
| 6626972 | Smoke exhauster having changeable filter devices | Chao-Cheng Chiang | 2003-09-30 |
| 6284011 | Smoke exhauster having detachable filter device | Chao-Cheng Chiang | 2001-09-04 |
| 6214073 | Smoke exhauster having a detachable fan casing | Chao-Cheng Chiang | 2001-04-10 |
| 5979436 | Smoke exhauster having peripheral air drawing effect | Chao-Cheng Chiang | 1999-11-09 |
| 5927268 | Smoke exhauster | Chao-Cheng Chiang | 1999-07-27 |
| 5868127 | Net device for smoke exhauster | Chao-Cheng Chiang | 1999-02-09 |
| 5623400 | Control system for smoke exhauster | Chao-Cheng Chiang | 1997-04-22 |
| 5469837 | Smoke exhauster having cleaning device | Chao-Cheng Chiang | 1995-11-28 |
| 5158429 | Self-contained cleaning system for smoke exhausters | Chao-Cheng Chiang | 1992-10-27 |