Keyboard apparatus
US-11211037-B2 · Dec 28, 2021 · US
Hammers
Hammers · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G10C3/18 |
| Official title | Hammers |
| Display label | Hammers |
| Total patents | 85 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 9 |
| 2017 | 8 |
| 2018 | 12 |
| 2019 | 14 |
| 2020 | 12 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 7 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stopper rail for silent piano
US-2021304710-A1 · Sep 30, 2021 · US
Keyboard apparatus
US-2020410965-A1 · Dec 31, 2020 · US
Hammer assembly and keyboard instrument
US-10825427-B2 · Nov 3, 2020 · US
Keyboard apparatus
US-10796672-B2 · Oct 6, 2020 · US
Keyboard apparatus
US-10777178-B2 · Sep 15, 2020 · US
Hammer assembly, keyboard instrument, and hammer
US-10636394-B2 · Apr 28, 2020 · US
Support assembly and keyboard apparatus
US-10607577-B2 · Mar 31, 2020 · US
Keyboard instrument
US-10580390-B2 · Mar 3, 2020 · US
Actuator, pressing device and keyboard instrument
US-2020043452-A1 · Feb 6, 2020 · US
Keyboard instrument
US-2020043446-A1 · Feb 6, 2020 · US
Keyboard apparatus
US-10553190-B2 · Feb 4, 2020 · US
Sensor and keyboard device
US-2020013381-A1 · Jan 9, 2020 · US
Keyboard device
US-2020005749-A1 · Jan 2, 2020 · US
Hammer assembly and keyboard instrument
US-2019392788-A1 · Dec 26, 2019 · US
Hammer assembly, keyboard instrument, and hammer
US-2019362692-A1 · Nov 28, 2019 · US
Keyboard device and keyboard instrument
US-10418003-B2 · Sep 17, 2019 · US
Support assembly and keyboard apparatus
US-10403243-B2 · Sep 3, 2019 · US
Support assembly and keyboard apparatus
US-10395625-B2 · Aug 27, 2019 · US
Keyboard device
US-10380985-B2 · Aug 13, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G10C3/18?
- CPC G10C3/18 is the Cooperative Patent Classification code for “Hammers.”
- How many patents are filed under CPC G10C3/18 (Hammers)?
- Our database includes 85 publications tagged with this CPC code.
- Is patent activity under CPC G10C3/18 growing?
- Publication counts under this code: 7 in 2024 vs 6 in 2025 (latest complete years).