Drumhead fastening device and drum
US-2025378804-A1 · Dec 11, 2025 · US
Shells · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G10D13/22 |
| Official title | Shells |
| Display label | Shells |
| Total patents | 11 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2021 | 1 |
| 2025 | 3 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025378804-A1 · Dec 11, 2025 · US
US-2025266019-A1 · Aug 21, 2025 · US
US-2025006165-A1 · Jan 2, 2025 · US
US-11114071-B2 · Sep 7, 2021 · US
US-2019295516-A1 · Sep 26, 2019 · US
US-10418006-B2 · Sep 17, 2019 · US
US-2019251934-A1 · Aug 15, 2019 · US
US-10192534-B2 · Jan 29, 2019 · US
US-2018330701-A1 · Nov 15, 2018 · US
US-2018254028-A1 · Sep 6, 2018 · US
US-9190040-B2 · Nov 17, 2015 · US