Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6108846 | Cleaning apparatus for wheels of car, for semiconductor device manufacturing | Nick Chang | 2000-08-29 |
| 5849096 | Method for cleaning wheels of car for semiconductor device manufacturing | Nick Chang | 1998-12-15 |