Defrost systems and methods for heat pump water heaters
US-2024053072-A1 · Feb 15, 2024 · US
Mechanical Engineering
Mechanical Engineering · 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 | F25B47/02 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 494 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 26 |
| 2017 | 33 |
| 2018 | 44 |
| 2019 | 47 |
| 2020 | 59 |
| 2021 | 53 |
| 2022 | 57 |
| 2023 | 41 |
| 2024 | 52 |
| 2025 | 48 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Condenser evaporator system for refrigeration systems
US-2017307260-A1 · Oct 26, 2017 · US
Refrigeration cycle apparatus and air-conditioning apparatus
US-2017234590-A1 · Aug 17, 2017 · US
Apparatus for defrosting a plurality of heat exchangers having a common outdoor fan
US-9726420-B2 · Aug 8, 2017 · US
Refrigeration apparatus
US-2017198955-A1 · Jul 13, 2017 · US
Refrigeration system for a refrigerator appliance
US-9702603-B2 · Jul 11, 2017 · US
Air conditioning device for vehicle
US-9643470-B2 · May 9, 2017 · US
Heat pump system
US-9581361-B2 · Feb 28, 2017 · US
Heat source side unit and refrigeration cycle apparatus
US-2016370045-A1 · Dec 22, 2016 · US
Heat pump system
US-9506679-B2 · Nov 29, 2016 · US
Cooling device
US-2016305696-A1 · Oct 20, 2016 · US
Heat pump system
US-2016297283-A1 · Oct 13, 2016 · US
Gas defrosting system for refrigeration units using fluid cooled condensers
US-9464840-B2 · Oct 11, 2016 · US
Defrost Control Using Fan Data
US-2016258668-A1 · Sep 8, 2016 · US
Air conditioner and method of controlling the same
US-9429352-B2 · Aug 30, 2016 · US
Air coditioning device
US-2016238297-A1 · Aug 18, 2016 · US
Cooling system capable of defrosting
US-2016238296-A1 · Aug 18, 2016 · US
Systems and methods for defrosting an evaporator in a refrigeration system
US-9410727-B1 · Aug 9, 2016 · US
System and method of transferring refrigerant with a discharge pressure
US-2016209093-A1 · Jul 21, 2016 · US
Air conditioner and method for controlling an air conditioner
US-2016201962-A1 · Jul 14, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25B47/02?
- CPC F25B47/02 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F25B47/02 (Mechanical Engineering)?
- Our database includes 494 publications tagged with this CPC code.
- Is patent activity under CPC F25B47/02 growing?
- Publication counts under this code: 52 in 2024 vs 48 in 2025 (latest complete years).