Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5659085 | Cyclobutenedione derivative, process for preparing the same, and nonlinear optical element | Lyong-Sun Pu | 1997-08-19 |
| 5616802 | Cyclobutenedione derivative, process for preparing the same, and nonlinear optical element | Lyong-Sun Pu | 1997-04-01 |