Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8289816 | Chronograph timepiece | Kazuo Kato, Kenji Ogasawara, Saburo Manaka, Kazumi Sakumoto, Hiroshi Shimizu +5 more | 2012-10-16 |
| 8274863 | Chronograph timepiece | Tomohiro Ihashi, Kenji Ogasawara, Kazuo Kato, Kazumi Sakumoto, Hiroshi Shimizu +5 more | 2012-09-25 |
| 8223594 | Chronograph timepiece | Tomohiro Ihashi, Kenji Ogasawara, Kazuo Kato, Kazumi Sakumoto, Hiroshi Shimizu +5 more | 2012-07-17 |
| 8215827 | Chronograph timepiece | Kazuo Kato, Kenji Ogasawara, Saburo Manaka, Kazumi Sakumoto, Hiroshi Shimizu +5 more | 2012-07-10 |
| 8213268 | Chronograph timepiece | Kazuo Kato, Kenji Ogasawara, Saburo Manaka, Kazumi Sakumoto, Hiroshi Shimizu +5 more | 2012-07-03 |
| 8139445 | Stepping motor control circuit and analog electronic watch | Keishi Honmura, Saburo Manaka, Kosuke Yamamoto, Kenji Ogasawara, Kazumi Sakumoto +2 more | 2012-03-20 |
| 8111033 | Stepping motor control circuit and analog electronic timepiece | Kenji Ogasawara, Hiroyuki Masaki, Saburo Manaka, Keishi Honmura, Kazumi Sakumoto +3 more | 2012-02-07 |
| 7274337 | Antenna structure and wave clock having the antenna structure, and method for manufacturing the antenna structure | — | 2007-09-25 |
| 7262742 | Antenna frame, antenna structure, and watch type wave clock having the antenna structure | — | 2007-08-28 |
| 5949215 | Small-sized battery charger | — | 1999-09-07 |
| 5889735 | Thermoelectrically powered wrist watch | Masayuki Kawata | 1999-03-30 |
| 5668414 | Spring driven electricity generator with a control circuit to regulate the release of energy in the spring | Osamu Takahashi, Yabe Hiroshi | 1997-09-16 |
| 5615178 | Electronic control timepiece | Osamu Takahashi | 1997-03-25 |
| 5550795 | Electronic timepiece and a method of driving a stepping motor of electronic timepiece | Jun Hirotomi | 1996-08-27 |