Speaker apparatus
US-2024388851-A1 · Nov 21, 2024 · US
Clamping rim of diaphragm or cone against seating
Clamping rim of diaphragm or cone against seating · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R7/22 |
| Official title | Clamping rim of diaphragm or cone against seating |
| Display label | Clamping rim of diaphragm or cone against seating |
| Total patents | 121 |
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 | 8 |
| 2017 | 8 |
| 2018 | 10 |
| 2019 | 13 |
| 2020 | 15 |
| 2021 | 12 |
| 2022 | 14 |
| 2023 | 14 |
| 2024 | 11 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High-water pressure waterproof microspeaker
US-11102573-B2 · Aug 24, 2021 · US
Membrane support for dual backplate transducers
US-10981780-B2 · Apr 20, 2021 · US
Speaker
US-10869135-B2 · Dec 15, 2020 · US
Speaker
US-10869136-B2 · Dec 15, 2020 · US
Speaker device
US-10841705-B2 · Nov 17, 2020 · US
Loudspeaker and diaphragm unit
US-2020267475-A1 · Aug 20, 2020 · US
Loudspeaker and method of manufacturing loudspeaker
US-2020245072-A1 · Jul 30, 2020 · US
High-Water Pressure Waterproof Microspeaker
US-2020221222-A1 · Jul 9, 2020 · US
Speaker
US-2020186933-A1 · Jun 11, 2020 · US
Electroacoustic transducer and display apparatus
US-10674275-B2 · Jun 2, 2020 · US
Piezoelectric sounding component
US-10609490-B2 · Mar 31, 2020 · US
Composite piezoelectric actuator
US-2020098970-A1 · Mar 26, 2020 · US
Speaker
US-2020068314-A1 · Feb 27, 2020 · US
Speaker
US-2020045463-A1 · Feb 6, 2020 · US
Micro sound device
US-2020045434-A1 · Feb 6, 2020 · US
Glass sheet composite
US-2020021916-A1 · Jan 16, 2020 · US
Dual asymmetric compression driver
US-10531200-B2 · Jan 7, 2020 · US
Speaker box
US-10524032-B1 · Dec 31, 2019 · US
Electroacoustic transducer, method of manufacturing electroacoustic transducer, and electroacoustic transducing device
US-10506349-B2 · Dec 10, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R7/22?
- CPC H04R7/22 is the Cooperative Patent Classification code for “Clamping rim of diaphragm or cone against seating.”
- How many patents are filed under CPC H04R7/22 (Clamping rim of diaphragm or cone against seating)?
- Our database includes 121 publications tagged with this CPC code.
- Is patent activity under CPC H04R7/22 growing?
- Publication counts under this code: 11 in 2024 vs 10 in 2025 (latest complete years).