Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9190941 | Stepping motor control circuit, movement, and analog electronic timepiece | Kenji Ogasawara, Kazumi Sakumoto, Keishi Honmura, Kosuke Yamamoto, Satoshi Sakai | 2015-11-17 |
| 9182746 | Stepping motor control circuit, movement and analog electronic timepiece | Kosuke Yamamoto, Kazumi Sakumoto, Kenji Ogasawara, Keishi Honmura, Satoshi Sakai | 2015-11-10 |
| 9086685 | Stepping motor control circuit, movement, and analogue electronic timepiece | Kosuke Yamamoto, Akira Takakura, Kenji Ogasawara, Kazumi Sakumoto, Keishi Honmura | 2015-07-21 |
| 8873344 | Power consumption control device, timepiece device, electronic device, power consumption control method, power consumption control program | Hiroshi Shimizu, Kazumi Sakumoto, Kenji Ogasawara, Kosuke Yamamoto, Keishi Honmura +1 more | 2014-10-28 |
| 8810186 | Motor drive device, timepiece device, and electronic device | Shotaro Kamiyama, Kenji Ogasawara, Keishi Honmura, Kazumi Sakumoto, Hiroshi Shimizu +1 more | 2014-08-19 |
| 8721170 | Stepping motor control circuit, movement, and analogue electronic timepiece | Kenji Ogasawara, Kazumi Sakumoto, Keishi Honmura, Kosuke Yamamoto | 2014-05-13 |
| 8699304 | Electronic device, electronic device control method, and electronic device control program | Kazumi Sakumoto, Keishi Honmura, Kosuke Yamamoto, Kenji Ogasawara, Hiroshi Shimizu | 2014-04-15 |
| 8569991 | Stepping motor control circuit and analogue electronic watch | Akira Takakura, Kenji Ogasawara, Kazumi Sakumoto, Shotaro Kamiyama, Keishi Honmura +2 more | 2013-10-29 |
| 8406086 | Electronic timepiece | Hiroshi Shimizu, Tomohiro Ihashi, Kenji Ogasawara, Kazuo Kato, Kazumi Sakumoto +5 more | 2013-03-26 |
| 8351303 | Stepping motor controller and analog electronic timepiece | Kenji Ogasawara, Akira Takakura, Keishi Honmura, Takanori Hasegawa, Kosuke Yamamoto +2 more | 2013-01-08 |
| 8335135 | Stepping motor control circuit and analogue electronic timepiece | Akira Takakura, Kenji Ogasawara, Kazumi Sakumoto, Kazuo Kato, Keishi Honmura +3 more | 2012-12-18 |
| 8319468 | Stepping motor control circuit and analogue electronic timepiece | Takanori Hasegawa, Keishi Honmura, Kasuke Yamamoto, Kenji Ogasawara, Hiroyuki Masaki +3 more | 2012-11-27 |
| 8295131 | Chronograph timepiece | Kazuo Kato, Akira Takakura, Kenji Ogasawara, Kazumi Sakumoto, Hiroshi Shimizu +5 more | 2012-10-23 |
| 8289816 | Chronograph timepiece | Kazuo Kato, Akira Takakura, Kenji Ogasawara, 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, Akira Takakura, Kenji Ogasawara, Kazumi Sakumoto, Hiroshi Shimizu +5 more | 2012-07-10 |
| 8213268 | Chronograph timepiece | Kazuo Kato, Akira Takakura, Kenji Ogasawara, Kazumi Sakumoto, Hiroshi Shimizu +5 more | 2012-07-03 |
| 8139445 | Stepping motor control circuit and analog electronic watch | Keishi Honmura, Kosuke Yamamoto, Akira Takakura, Kenji Ogasawara, Kazumi Sakumoto +2 more | 2012-03-20 |
| 8111033 | Stepping motor control circuit and analog electronic timepiece | Kenji Ogasawara, Hiroyuki Masaki, Akira Takakura, Keishi Honmura, Kazumi Sakumoto +3 more | 2012-02-07 |
| 8064294 | Analogue electronic clock and motor control circuit | Kenji Ogasawara | 2011-11-22 |
| 7606116 | Analogue electronic clock and motor control circuit | Kenji Ogasawara | 2009-10-20 |
| 6946813 | Step motor control device and electronic timepiece equipped with step motor control device | — | 2005-09-20 |
| 6914407 | Step motor control device and electronic timepiece equipped with step motor control device | — | 2005-07-05 |
| 6811304 | Analog electronic timepiece | — | 2004-11-02 |