Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487163 | Optical disk and optical disk apparatus | Toshihiro Sugaya | 2002-11-26 |
| 6421451 | Step difference detection apparatus and processing apparatus using the same | Masataka Shiratsuchi, Tutomu Saito, Kei Shimura | 2002-07-16 |
| 6344928 | Display device | Masataka Shiratsuchi, Yuzo Hisatake, Yoshinori Higuchi, Nozomu Harada | 2002-02-05 |