Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484609 | Method of producing press-forming punch and die | Teiji Watanabe, Yoshikazu Nakamura | 2002-11-26 |
| 6474196 | Method of producing press-forming punch and die | Teiji Watanabe, Yoshikazu Nakamura | 2002-11-05 |
| 6438172 | Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording medium | Toshifumi Takeuchi | 2002-08-20 |
| 6424477 | Information signal recording and playback method and apparatus therefor | Seiichi Saito, Toshifumi Takeuchi, Junji Shiokawa, Osamu Kawamae | 2002-07-23 |
| 6404979 | Optical disk and optical disk reproduction apparatus | Masayuki Hirabayashi, Hideaki Suzuki, Yutaka Nagai, Toshifumi Takeuchi | 2002-06-11 |