Device with a microphone and a condensation collection apparatus to prevent migration of condensation to the microphone
US-2023403491-A1 · Dec 14, 2023 · US
using a passive diaphragm
using a passive diaphragm · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R1/283 |
| Official title | {using a passive diaphragm} |
| Display label | using a passive diaphragm |
| Total patents | 77 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 9 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 6 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 18 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vibration sensors
US-2023384147-A1 · Nov 30, 2023 · US
Implantable microphone management
US-2023379620-A1 · Nov 23, 2023 · US
Vibration sensor
US-2023362525-A1 · Nov 9, 2023 · US
Vibration sensors
US-2023358602-A1 · Nov 9, 2023 · US
Passive horn integrally formed by using thermoplastic vulcanized rubber and preparation method thereof
US-11780131-B2 · Oct 10, 2023 · US
Vibration sensors
US-2023288250-A1 · Sep 14, 2023 · US
MEMS microphone
US-11743634-B2 · Aug 29, 2023 · US
Implantable microphone management
US-11722815-B2 · Aug 8, 2023 · US
Vibration sensors
US-2023199360-A1 · Jun 22, 2023 · US
Vibration sensor
US-2023199370-A1 · Jun 22, 2023 · US
Speakers
US-2023179925-A1 · Jun 8, 2023 · US
Vibration sensors
US-11662248-B2 · May 30, 2023 · US
Vibration sensors
US-2023046902-A1 · Feb 16, 2023 · US
Mems microphone
US-2022377453-A1 · Nov 24, 2022 · US
Electronic device with loudspeaker module
US-2022201376-A1 · Jun 23, 2022 · US
Passive horn integrally formed by using thermoplastic vulcanized rubber and preparation method thereof
US-11338483-B2 · May 24, 2022 · US
Display apparatus
US-11314476-B2 · Apr 26, 2022 · US
MEMS microphone
US-11297414-B2 · Apr 5, 2022 · US
Waterproof microphone
US-2022021969-A1 · Jan 20, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R1/283?
- CPC H04R1/283 is the Cooperative Patent Classification code for “using a passive diaphragm.”
- How many patents are filed under CPC H04R1/283 (using a passive diaphragm)?
- Our database includes 77 publications tagged with this CPC code.
- Is patent activity under CPC H04R1/283 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).