Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7907505 | Code disk with a plurality of tracks having different patterns | Masahiko Sakamoto, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka, Masaru Imaizumi +2 more | 2011-03-15 |
| 7612331 | Code disk with a plurality of tracks having different patterns | Masahiko Sakamoto, Koichi Sugimoto, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka +2 more | 2009-11-03 |
| 7193962 | Code disk with a plurality of tracks having different patterns | Masahiko Sakamoto, Koichi Sugimoto, Masahiro Otani, Yasushi Kawashima, Isamu Higashioka +2 more | 2007-03-20 |