Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6219131 | Method and device for measuring stresses of membranes in a transparent material using polarization | Jingwei Zhang | 2001-04-17 |
| 6215556 | Process and device for measuring the thickness of a transparent material using a modulated frequency light source | Jingwei Zhang | 2001-04-10 |
| 5657124 | Method of measuring the thickness of a transparent material | Jingwei Zhang | 1997-08-12 |