Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6448304 | Optical materials having good ultraviolet absorbability and method for producing them | Shinsuke Itoh | 2002-09-10 |
| 6441119 | Optical materials having good ultraviolet absorbability and method for producing them | — | 2002-08-27 |