Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11022940 | Timepiece movement and timepiece | — | 2021-06-01 |
| 10908556 | Timepiece movement and timepiece | — | 2021-02-02 |
| 10809665 | Timepiece movement | — | 2020-10-20 |
| 9019802 | Solar-powered electronic timepiece | — | 2015-04-28 |
| 7364352 | Time measurement device and method | Hidehiro Akahane, Kenichi Okuhara, Akihiko Maruyama | 2008-04-29 |
| 7215603 | Clocking apparatus | — | 2007-05-08 |
| 6973010 | Timepiece device | Mamoru Miyasaka, Osamu Takahashi | 2005-12-06 |
| 6724692 | Time measurement device and method | Hidehiro Akahane, Kenichi Okuhara, Akihiko Maruyama | 2004-04-20 |
| 6567345 | Clocking device | Tsuneaki Furukawa, Eiichi Hiraya, Akihiko Maruyama | 2003-05-20 |
| 6466518 | Time measurement device | Hidehiro Akahane, Kenichi Okuhara, Akihiko Maruyama | 2002-10-15 |
| 6370087 | Time measurement device and time measurement method | Hidehiro Akahane, Kenichi Okuhara, Akihiko Maruyama | 2002-04-09 |
| 6097672 | Display device and watch with same | Joji Kitahara | 2000-08-01 |
| 5617376 | Gear train structure of an electronic watch | Toyoshige Honzawa, Kuniharu Natori | 1997-04-01 |
| 5506820 | Gear train structure of an electronic watch | Toyoshige Honzawa, Kuniharu Natori | 1996-04-09 |
| 5339297 | Switching arrangement for applying battery voltage to circuitry block in an analog timepiece | Hiroshi Suzuki, Shigeru Aoki, Akihiko Maruyama | 1994-08-16 |
| 5214625 | Setting mechanism for an analog timepiece | Hiroshi Suzuki, Shigeru Aoki, Akihiko Maruyama | 1993-05-25 |
| 5042016 | Analog timepiece | Hiroshi Suzuki, Shigeru Aoki, Akihiko Maruyama | 1991-08-20 |