Waterless keep-alive apparatus and refrigeration appliance provided with the waterless keep-alive apparatus
US-2017303515-A1 · Oct 26, 2017 · US
for circulating air, e.g. by convection
for circulating air, e.g. by convection · 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 | F25D17/04 |
| Official title | for circulating air, e.g. by convection |
| Display label | for circulating air, e.g. by convection |
| Total patents | 249 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 16 |
| 2017 | 36 |
| 2018 | 30 |
| 2019 | 31 |
| 2020 | 28 |
| 2021 | 26 |
| 2022 | 14 |
| 2023 | 12 |
| 2024 | 10 |
| 2025 | 25 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ice-making device
US-2017307270-A1 · Oct 26, 2017 · US
Domestic refrigerator with separately attachable divisional wall having air channels
US-9797647-B2 · Oct 24, 2017 · US
Cooling air distribution device for a refrigerator
US-9797646-B2 · Oct 24, 2017 · US
Ice-making device for refrigerator
US-2017292747-A1 · Oct 12, 2017 · US
Refrigerator and drawer assembly thereof
US-2017292778-A1 · Oct 12, 2017 · US
Refrigerator and drawer assembly thereof
US-2017292777-A1 · Oct 12, 2017 · US
Refrigerator
US-2017292737-A1 · Oct 12, 2017 · US
Refrigeration cycle and refrigerator having the same
US-2017292740-A1 · Oct 12, 2017 · US
Refrigerator
US-2017292750-A1 · Oct 12, 2017 · US
Refrigeration cycle apparatus
US-2017284712-A1 · Oct 5, 2017 · US
Refrigeration cycle apparatus and liquid level detection sensor
US-2017276535-A1 · Sep 28, 2017 · US
Evaporator, refrigeration device using evaporator, and refrigeration device control method
US-2017276419-A1 · Sep 28, 2017 · US
Refrigerator
US-2017276420-A1 · Sep 28, 2017 · US
Convection based temperature assured packaging system
US-9758299-B2 · Sep 12, 2017 · US
Air purifier for refrigerator
US-2017234598-A1 · Aug 17, 2017 · US
Cooling apparatus and refrigerator having the same
US-9726419-B2 · Aug 8, 2017 · US
Convection Based Temperature Assured Packaging System
US-2017113868-A1 · Apr 27, 2017 · US
Refrigerator
US-2017082346-A1 · Mar 23, 2017 · US
Refrigerator and control method thereof
US-2017059228-A1 · Mar 2, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25D17/04?
- CPC F25D17/04 is the Cooperative Patent Classification code for “for circulating air, e.g. by convection.”
- How many patents are filed under CPC F25D17/04 (for circulating air, e.g. by convection)?
- Our database includes 249 publications tagged with this CPC code.
- Is patent activity under CPC F25D17/04 growing?
- Publication counts under this code: 10 in 2024 vs 25 in 2025 (latest complete years).