| 9959843 | Sound producing apparatus, keyboard instrument, and sound production control method | Dec 18, 15 | May 01, 18 | Yamaha Corporation |
| 9659549 | Support assembly and keyboard apparatus | Jul 22, 16 | May 23, 17 | YAMAHA CORPORATION |
| 9620090 | Hammer velocity measurement system | Sep 28, 15 | Apr 11, 17 | STEINWAY, INC. |
| 9607587 | Hammer device and keyboard device for electronic keyboard instrument | Oct 29, 14 | Mar 28, 17 | KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO |
| 9495940 | Keyboard device and keyboard instrument | Mar 13, 15 | Nov 15, 16 | CASIO COMPUTER CO., LTD. |
| 9437173 | Piano action | Jun 18, 14 | Sep 06, 16 | KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO |
| 9384715 | Keyboard apparatus and keyboard instrument | Mar 18, 15 | Jul 05, 16 | CASIO COMPUTER CO., LTD. |
| 9324306 | Keyboard device and keyboard instrument | Aug 24, 15 | Apr 26, 16 | CASIO COMPUTER CO., LTD. |
| 9177535 | Hammer device for keyboard instrument | Oct 20, 14 | Nov 03, 15 | KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO |
| 9006549 | Hammer device and keyboard device for electronic keyboard instrument | Nov 29, 12 | Apr 14, 15 | KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO |
| 9000281 | Enhanced vertical piano action system and method | Jul 09, 13 | Apr 07, 15 | Not available |
| 8937235 | Professional upright piano action | Apr 20, 13 | Jan 20, 15 | Not available |
| 8895822 | Action for upright piano | Jul 07, 11 | Nov 25, 14 | YUGEN KAISHA FUJII PIANO SERVICE, Yugen Kaisha Fuji Piano Service, |
| 8779256 | Keyboard apparatus | Mar 07, 11 | Jul 15, 14 | YAMAHA CORPORATION |
| 8735699 | Main action rail for upright piano with front-accessible whippen flange screw | Jan 19, 12 | May 27, 14 | Wessell, Nickel & Gross |
| 8735700 | Bearing member | Sep 27, 12 | May 27, 14 | KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO |
| 8648236 | Keyboard apparatus | Feb 06, 13 | Feb 11, 14 | YAMAHA CORPORATION |
| 8618394 | Low-power sector-rotating toggling actuator | Dec 27, 11 | Dec 31, 13 | Not available |
| 8614382 | Damper action for upright piano with sostenuto spring tab using tension from the damper spring | Mar 21, 12 | Dec 24, 13 | Wessell, Nickel & Gross |
| 8558095 | Keyboard apparatus | Mar 07, 11 | Oct 15, 13 | YAMAHA CORPORATION |