Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6010778 | Coating composition utilizing modified sol having tin oxide-tungsten oxide complex colloid particles and lens coated therewith | Yoichi Kimura, Koji Watanabe | 2000-01-04 |
| 5462806 | Plastic lens | Toshio Konishi, Toru Yashiro, Kouji Watanabe, Toshiya Shuin | 1995-10-31 |