Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9568887 | Operation stabilizing mechanism, movement, and mechanical timepiece | Takuma Kawauchiya, Masahiro Nakajima, Takashi Niwa | 2017-02-14 |
| 9164486 | Operation stabilization mechanism, movement, and mechanical timepiece | Takuma Kawauchiya, Takashi Niwa, Masahiro Nakajima | 2015-10-20 |
| 9098067 | Escapement, timepiece movement and timepiece | Shigeo Suzuki, Hisashi Fujieda | 2015-08-04 |
| 9052693 | Constant force device, movement and mechanical timepiece | Takuma Kawauchiya, Takashi Niwa, Masahiro Nakajima | 2015-06-09 |
| 8807827 | Detent escapement and mechanical timepiece | Hiroki Uchiyama, Takashi Niwa | 2014-08-19 |
| 8801268 | Detent escapement for timepiece and mechanical timepiece | Hiroki Uchiyama, Matsuo Kishi, Takashi Niwa, Miei Sato | 2014-08-12 |
| 8783943 | Detent escapement and manufacturing method thereof | Takashi Niwa | 2014-07-22 |
| 8696194 | Detent escapement and mechanical timepiece including detent escapement | Takashi Niwa | 2014-04-15 |
| 8491183 | Detent escapement for timepiece and mechanical timepiece | Hiroki Uchiyama, Matsuo Kishi, Miei Sato, Takashi Niwa | 2013-07-23 |