Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6476975 | Mother glass composition for graded index lens | Tetsuro Yoshii, Tadashi Koyama | 2002-11-05 |
| 6429977 | Optical imaging system | — | 2002-08-06 |
| 6366408 | Optical imaging system | Hiroyuki Nemoto, Shinji Kawamoto | 2002-04-02 |