Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12314012 | Timepiece and timepiece case | Chieko TAJIMA, Kazuma KOBAYASHI | 2025-05-27 |
| 12007721 | Timepiece and timepiece case | Chieko TAJIMA, Kazuma KOBAYASHI | 2024-06-11 |
| 10627781 | Switch device and timepiece | Tatsumi ICHIMURA | 2020-04-21 |
| 9336967 | Switch device and timepiece | Naohiko Sakurazawa, Yukio FUNABARA | 2016-05-10 |
| 6435709 | Band and wrist device | Tadao Hirano, Yuji Doi, Masaaki Hirai | 2002-08-20 |
| 6238083 | Band and wrist device | Tadao Hirano, Yuji Doi, Masaaki Hirai | 2001-05-29 |
| 5668784 | Watch band attachment mechanism | — | 1997-09-16 |