Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489430 | Polyisocyanate compounds, process for producing the same, and optical materials using the same | Yoshitaka Kitahara | 2002-12-03 |
| 6455729 | Polyisocyanate compounds, process for producing the same, and optical materials using the same | Yoshitaka Kitahara | 2002-09-24 |
| 6391433 | Coating composition and thin film layer for optical parts | Hiroshi Ohta | 2002-05-21 |