Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5576055 | Photochromic material, photochromic thin film, clay thin film, and their preparation | Tsuneo Kuwahara | 1996-11-19 |
| 5474715 | Photochromic material, photochromic thin film, clay thin film, and their preparation | Tsuneo Kuwahara | 1995-12-12 |