Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6409141 | Particle analyzer and composite lens formed by integrally joining plural lens elements of different focal points | Masao Yamazaki, Katsuhiro Tsuchiya, Yoshiyuki Takahara | 2002-06-25 |
| 6404979 | Optical disk and optical disk reproduction apparatus | Masayuki Hirabayashi, Hideaki Suzuki, Masafumi Nakamura, Toshifumi Takeuchi | 2002-06-11 |
| 6347353 | Information medium having digital signals recorded thereon | Hiroshi Hirayama, Osamu Kawamae, Masayuki Hirabayashi, Toshifumi Takeuchi | 2002-02-12 |