G10C 3/22
Specially adapted for grand pianos
Official title: specially adapted for grand pianos
G10C3/22 (Specially adapted for grand pianos) appears on 69 US grants and 46 published applications in this corpus.
Search patents in G10C- Granted patents
- 69
- Published applications
- 46
- Assignees
- 18
- Inventors
- 90
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 4 |
| 2003 | 4 | 2 |
| 2004 | 2 | 1 |
| 2005 | 1 | 4 |
| 2006 | 3 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 2 |
| 2010 | 5 | 1 |
| 2011 | 0 | 3 |
| 2012 | 3 | 0 |
| 2013 | 0 | 5 |
| 2014 | 4 | 2 |
| 2015 | 2 | 0 |
| 2016 | 2 | 4 |
| 2017 | 3 | 4 |
| 2018 | 2 | 3 |
| 2019 | 3 | 1 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wippen or repetition flange bushing12 May 2026US 12,626,675 B2
- Elliptical silicone roller for grand piano action with customized durometer reading12 Sep 2023US 11,756,513 B1
- Stopper rail for silent piano15 Feb 2022US 11,250,820 B2Kabushiki Kaisha Kawai Seisakusho
- Support assembly and keyboard apparatus31 Mar 2020US 10,607,577 B2Yamaha Corporation
- Keyboard instrument3 Mar 2020US 10,580,390 B2Casio Computer Co., Ltd.
- Keyboard device for keyboard instrument2 Oct 2025US 2025/0308485 A1Kabushiki Kaisha Kawai Gakki Seisakusho
- Wippen or repetition flange bushing14 Aug 2025US 2025/0259607 A1
- Stopper rail for silent piano30 Sep 2021US 2021/0304710 A1Kabushiki Kaisha Kawai Gakki Seisakusho
- Keyboard instrument6 Feb 2020US 2020/0043446 A1Casio Computer Co., Ltd.
- Action of grand piano3 Oct 2019US 2019/0304412 A1Kabushiki Kaisha Kawai Gakki Seisakusho
Most cited
By later US patents
- Muffler mechanism for a piano22US 4,633,753 ANippon Gakki Seizo Kabushiki Kaisha · 1987
- Method and apparatus for altering actuator drive in a reproducing piano18US 4,593,592 AKimball International, Inc. · 1986
- Sound controller incorporated in acoustic musical instrument for controlling qualities of sound16US 5,262,586 AYamaha Corporation · 1993
- Grand piano action14US 4,685,371 A1987
- Electromagnetic devices for actuating piano keys12US 4,338,847 A1982