Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6448304 | Optical materials having good ultraviolet absorbability and method for producing them | Masahisa Kosaka | 2002-09-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6448304 | Optical materials having good ultraviolet absorbability and method for producing them | Masahisa Kosaka | 2002-09-10 |