| 11289060 |
Keyboard device |
Yukihide Takata |
2022-03-29 |
| 9646578 |
Keyboard device |
Yukihide Takata, Yukihiro Morohashi |
2017-05-09 |
| 9583086 |
Keyboard device of electronic musical instrument |
Yukihide Takata, Yukihiro Morohashi |
2017-02-28 |
| 9349359 |
Electronic keyboard instrument |
Yukihide Takata, Yukihiro Morohashi |
2016-05-24 |
| 9281142 |
Keyboard device |
Mutsuo Sawada |
2016-03-08 |
| 8445765 |
Keyboard device |
Mutsuo Sawada |
2013-05-21 |
| 7952010 |
Structure of a key |
Makoto Minakawa, Yukihide Takata |
2011-05-31 |
| 7576273 |
Hammer keyboard system and chassis |
Hitoshi Sato |
2009-08-18 |
| 7550664 |
Keyboard apparatus |
Yujiro Kamshima, Hitoshi Sato |
2009-06-23 |
| 7151212 |
Compact keyboard apparatus with accurate detection of key pressing speed |
Yasunori Nagaoka, Shinichi Matsumoto |
2006-12-19 |
| 7141729 |
Hammer keyboard system and chassis |
Hitoshi Sato |
2006-11-28 |
| 7060883 |
Compact keyboard apparatus with accurate detection of key pressing speed |
Yasunori Nagaoka, Shinichi Matsumoto |
2006-06-13 |
| 6147290 |
Electronic musical instrument keyboard apparatus |
— |
2000-11-14 |