Keyboard instrument and method of producing key of keyboard instrument
US-2025299651-A1 · Sep 25, 2025 · US
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of upright pianos
of upright pianos · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G10C1/02 |
| Official title | of upright pianos |
| Display label | of upright pianos |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Keyboard equipment
US-2024321239-A1 · Sep 26, 2024 · US
Upright keyboard instrument
US-11037533-B2 · Jun 15, 2021 · US
Upright keyboard instrument
US-2020302899-A1 · Sep 24, 2020 · US
Upright piano
US-10424275-B2 · Sep 24, 2019 · US
Upright piano
US-2019147835-A1 · May 16, 2019 · US
Piano action
US-9437173-B2 · Sep 6, 2016 · US