Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6387275 | Pretreatment system and method for recycling exhaust water | Chen-Chang Chang, Shih-Cheng Lin | 2002-05-14 |
| 6245226 | Pretreatment system and method for recycling exhaust water | Chen-Chang Chang, Shih-Cheng Lin | 2001-06-12 |