Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5045210 | Heavy metal removal process | Wei-Chih Chen, Kenneth C. Hou | 1991-09-03 |
| 4908137 | Heavy metal removal process | Wei-Chih Chen, Kenneth C. Hou | 1990-03-13 |
| 4321078 | Slow release fertilizer composition | — | 1982-03-23 |