G09B 15/004
Non-electrically operated systems
Official title: {Non-electrically operated systems}
G09B15/004 (Non-electrically operated systems) appears on 92 US grants and 45 published applications in this corpus.
Search patents in G09B- Granted patents
- 92
- Published applications
- 45
- Assignees
- 13
- Inventors
- 110
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 2 |
| 2006 | 0 | 3 |
| 2007 | 0 | 4 |
| 2008 | 5 | 3 |
| 2009 | 3 | 4 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 4 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 2 | 0 |
| 2017 | 2 | 1 |
| 2018 | 2 | 2 |
| 2019 | 2 | 1 |
| 2020 | 1 | 3 |
| 2021 | 3 | 4 |
| 2022 | 4 | 3 |
| 2023 | 4 | 2 |
| 2024 | 1 | 2 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Music chord map23 Sep 2025US 12,424,121 B2
- Music theory teaching method and system1 Jul 2025US 12,347,330 B2Ayou, LLC
- Device and method for displaying musical chords2 Jan 2024US 11,862,032 B1
- Apparatus for playing chords on musical instruments for visually-impaired people and method of performing same21 Nov 2023US 11,823,586 B1
- Methodology and toolkit for music literacy learning17 Oct 2023US 11,790,800 B2MindChamps Music Pte. Limited
- Music Theory Learning Device6 Aug 2026US 2026/0229141 A1
- Universal Guitar Chord Learning System and Method5 Mar 2026US 2026/0065801 A1
- Music theory teaching method and system6 Feb 2025US 2025/0046210 A1Ayou, LLC
- Music Chord Map28 Nov 2024US 2024/0395164 A1
- Re-writable board for musical instrument instruction22 Feb 2024US 2024/0062672 A1
Most cited
By later US patents
- Method of and means for producing musical note relationships188US 5,741,990 ANotepool, Ltd. · 1998
- Musical notation for keyboard instruments57US 5,574,238 A1996
- Music teaching aid54US 6,031,172 AMusacus International Limited · 2000
- Method of and means for producing musical note relationships53US 5,415,071 A1995
- Teaching method and guides to teach piano34US 6,881,887 B22005