Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876209 | Method of making avalanche photodiode | — | 1989-10-24 |
| 4857982 | Avalanche photodiode with floating guard ring | — | 1989-08-15 |
| 4829347 | Process for making indium gallium arsenide devices | Chu-Liang Cheng, Julian Cheng | 1989-05-09 |