Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10067475 | Timepiece | Takashi Niwa, Masahiro Nakajima | 2018-09-04 |
| 9568887 | Operation stabilizing mechanism, movement, and mechanical timepiece | Masahiro Nakajima, Takashi Niwa, Masayuki Koda | 2017-02-14 |
| 9235193 | Temperature compensation-type balance, timepiece movement, mechanical timepiece and manufacturing method of temperature compensation-type balance | Takashi Niwa, Masahiro Nakajima, Hisashi Fujieda, Manabu Shinke | 2016-01-12 |
| 9188956 | Balance, timepiece movement, timepiece and manufacturing method of balance | Masahiro Nakajima, Takashi Niwa | 2015-11-17 |
| 9164486 | Operation stabilization mechanism, movement, and mechanical timepiece | Takashi Niwa, Masahiro Nakajima, Masayuki Koda | 2015-10-20 |
| 9128465 | Balance with hairspring, movement, and timepiece | Takashi Niwa, Masahiro Nakajima | 2015-09-08 |
| 9052693 | Constant force device, movement and mechanical timepiece | Takashi Niwa, Masahiro Nakajima, Masayuki Koda | 2015-06-09 |