Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6351333 | Optical element and optical system having the same | Keisuke Araki, Sadahiko Tsuji, Tsunefumi Tanaka, Kenichi Kimura, Norihiro Nanba +2 more | 2002-02-26 |
| 6335837 | Optical element and optical apparatus having it | Takeshi Akiyama | 2002-01-01 |