Multi-layer loudspeaker cover and vehicle
US-11032647-B2 · Jun 8, 2021 · US
comprising superposed layers separated by air or other fluid
comprising superposed layers separated by air or other fluid · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R7/08 |
| Official title | comprising superposed layers separated by air or other fluid |
| Display label | comprising superposed layers separated by air or other fluid |
| Total patents | 133 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 8 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 17 |
| 2020 | 16 |
| 2021 | 17 |
| 2022 | 16 |
| 2023 | 14 |
| 2024 | 17 |
| 2025 | 8 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Transducer having a conductive suspension member
US-10911874-B2 · Feb 2, 2021 · US
Heat radiating structure and electronic device including same
US-2020404808-A1 · Dec 24, 2020 · US
Piezoelectric microelectromechanical acoustic transducer having improved characteristics and corresponding manufacturing process
US-2020382876-A1 · Dec 3, 2020 · US
Display apparatus
US-2020301194-A1 · Sep 24, 2020 · US
Evacuation of liquid from acoustic space
US-10750287-B2 · Aug 18, 2020 · US
Ordered picklist for liquid transfer
US-10743109-B1 · Aug 11, 2020 · US
Glass sheet composite, and diaphragm
US-2020238665-A1 · Jul 30, 2020 · US
Glass sheet composite
US-2020230922-A1 · Jul 23, 2020 · US
Display Apparatus
US-2020224818-A1 · Jul 16, 2020 · US
Glass sheet composite, and diaphragm
US-2020223187-A1 · Jul 16, 2020 · US
MEMS Microphone
US-2020213690-A1 · Jul 2, 2020 · US
Display apparatus
US-10698243-B2 · Jun 30, 2020 · US
Waterproof sound-transmitting sheet
US-10694287-B2 · Jun 23, 2020 · US
Multi-layer loudspeaker cover and vehicle
US-2020196059-A1 · Jun 18, 2020 · US
Dual back-plate and diaphragm microphone
US-2020107130-A1 · Apr 2, 2020 · US
Composite piezoelectric actuator
US-2020098970-A1 · Mar 26, 2020 · US
Glass sheet composite
US-2020021916-A1 · Jan 16, 2020 · US
Glass sheet composite
US-2019387322-A1 · Dec 19, 2019 · US
Miniature receiver
US-2019379978-A1 · Dec 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R7/08?
- CPC H04R7/08 is the Cooperative Patent Classification code for “comprising superposed layers separated by air or other fluid.”
- How many patents are filed under CPC H04R7/08 (comprising superposed layers separated by air or other fluid)?
- Our database includes 133 publications tagged with this CPC code.
- Is patent activity under CPC H04R7/08 growing?
- Publication counts under this code: 17 in 2024 vs 8 in 2025 (latest complete years).