Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6582118 | Electronic timepiece having transmission wheel rotational position detecting apparatus | Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Yoshio Koyama +4 more | 2003-06-24 |
| 6584040 | Electronic timepiece | Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Yoshio Koyama +4 more | 2003-06-24 |
| 6422348 | Transmission wheel, method for manufacturing transmission wheel and self-winding wheel train structure having transmission wheel | Koichiro Jujo | 2002-07-23 |
| 6088300 | Calendar electronic timepiece | Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Yoshio Koyama +4 more | 2000-07-11 |
| 6088302 | Electronic timepiece | Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Yoshio Koyama +4 more | 2000-07-11 |
| 5903519 | Calendar watch | Masaaki Takahashi | 1999-05-11 |
| 5867454 | Automatic watch | Masaaki Takahashi | 1999-02-02 |