Refrigerator with machine room of which cover has attenuated vibration
US-2025277617-A1 · Sep 4, 2025 · US
with respect to sound
with respect to sound · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F25D2201/30 |
| Official title | with respect to sound |
| Display label | with respect to sound |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 6 |
| 2017 | 5 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 10 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Appliance and system for self-diagnostics
US-2025271326-A1 · Aug 28, 2025 · US
Air-cooled refrigerator supplying air through centrifugal fan
US-12398940-B2 · Aug 26, 2025 · US
Piston compressor and portable refrigerator comprising same
US-2025215865-A1 · Jul 3, 2025 · US
Refrigerator and control method thereof
US-2025102221-A1 · Mar 27, 2025 · US
Muffling device and refrigerating and freezing apparatus
US-2025014557-A1 · Jan 9, 2025 · US
Air duct assembly and refrigerating appliance having the same
US-2024210092-A1 · Jun 27, 2024 · US
Refrigeration apparatus and production method thereof
US-2024210099-A1 · Jun 27, 2024 · US
Refrigerator and noise-reducing device mounted thereto
US-2024118016-A1 · Apr 11, 2024 · US
Silencing device and refrigerator
US-2024060513-A1 · Feb 22, 2024 · US
Refrigerator with divider
US-11835289-B2 · Dec 5, 2023 · US
Refrigerator and control method therefor
US-11754336-B2 · Sep 12, 2023 · US
Air-cooled refrigerator supplying air through centrifugal fan
US-2023243568-A1 · Aug 3, 2023 · US
Refrigerator
US-11709012-B2 · Jul 25, 2023 · US
Refrigerator with compressor noise reduction
US-11587545-B2 · Feb 21, 2023 · US
Refrigerator
US-2022268510-A1 · Aug 25, 2022 · US
Refrigerator
US-11397045-B2 · Jul 26, 2022 · US
Refrigerator
US-11359856-B2 · Jun 14, 2022 · US
Refrigerator with divider
US-2022128289-A1 · Apr 28, 2022 · US
Refrigerator and control method therefor
US-2021310726-A1 · Oct 7, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25D2201/30?
- CPC F25D2201/30 is the Cooperative Patent Classification code for “with respect to sound.”
- How many patents are filed under CPC F25D2201/30 (with respect to sound)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC F25D2201/30 growing?
- Publication counts under this code: 4 in 2024 vs 6 in 2025 (latest complete years).