Air-conditioning apparatus
US-2024085044-A1 · Mar 14, 2024 · US
Alternate defrosting
Alternate defrosting · 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 | F25B2347/021 |
| Official title | Alternate defrosting |
| Display label | Alternate defrosting |
| Total patents | 72 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 8 |
| 2020 | 11 |
| 2021 | 11 |
| 2022 | 3 |
| 2023 | 11 |
| 2024 | 8 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hot gas defrost using dedicated low temperature compressor discharge
US-2024044561-A1 · Feb 8, 2024 · US
Hot gas defrost system using hot gas from low temperature compressor
US-2023408166-A1 · Dec 21, 2023 · US
Hot gas defrost using low temperature compressor discharge gas and auxiliary flash tank
US-2023408167-A1 · Dec 21, 2023 · US
Hot gas defrost using fluid from high pressure tank
US-2023408168-A1 · Dec 21, 2023 · US
Hot gas defrost using dedicated low temperature compressor discharge
US-11828506-B2 · Nov 28, 2023 · US
Refrigerator
US-2023304723-A1 · Sep 28, 2023 · US
Air conditioner and method for controlling the same
US-2023296273-A1 · Sep 21, 2023 · US
Hot gas defrost using dedicated low temperature compressor discharge
US-2023070186-A1 · Mar 9, 2023 · US
Hot gas defrost using medium temperature compressor discharge
US-2023071132-A1 · Mar 9, 2023 · US
Refrigeration cycle apparatus
US-11585579-B2 · Feb 21, 2023 · US
Refrigerator
US-11578903-B2 · Feb 14, 2023 · US
Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus
US-11578930-B2 · Feb 14, 2023 · US
Refrigerator with tandem evaporators
US-11493256-B2 · Nov 8, 2022 · US
Hybrid heating system
US-11415374-B2 · Aug 16, 2022 · US
Solid-state refrigeration device
US-2022214091-A1 · Jul 7, 2022 · US
Air-conditioning apparatus
US-2021348789-A1 · Nov 11, 2021 · US
Refrigerator
US-11150006-B2 · Oct 19, 2021 · US
De-icing control in a vehicle heat pump system
US-2021310721-A1 · Oct 7, 2021 · US
De-icing control in a vehicle heat pump system
US-11137195-B2 · Oct 5, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25B2347/021?
- CPC F25B2347/021 is the Cooperative Patent Classification code for “Alternate defrosting.”
- How many patents are filed under CPC F25B2347/021 (Alternate defrosting)?
- Our database includes 72 publications tagged with this CPC code.
- Is patent activity under CPC F25B2347/021 growing?
- Publication counts under this code: 8 in 2024 vs 6 in 2025 (latest complete years).