Air-conditioning apparatus
US-12158294-B2 · Dec 3, 2024 · US
Clogging
Clogging · 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 | F25B2500/04 |
| Official title | Clogging |
| Display label | Clogging |
| Total patents | 70 |
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 |
| 2017 | 4 |
| 2018 | 9 |
| 2019 | 5 |
| 2020 | 11 |
| 2021 | 9 |
| 2022 | 10 |
| 2023 | 7 |
| 2024 | 7 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cooling system with oil return to accumulator
US-11933527-B2 · Mar 19, 2024 · US
Air-conditioning apparatus
US-11802723-B2 · Oct 31, 2023 · US
Air-conditioning apparatus
US-2023258351-A1 · Aug 17, 2023 · US
Cooling system for fluid to be cooled
US-11725852-B2 · Aug 15, 2023 · US
Blocked coil detection system
US-2023243560-A1 · Aug 3, 2023 · US
Air-conditioning apparatus
US-2023106624-A1 · Apr 6, 2023 · US
Method for suppressing the blockage of miniature Joule-Thomson cryocooler based on photothermal effect
US-11561035-B2 · Jan 24, 2023 · US
Heat cycle system
US-11548267-B2 · Jan 10, 2023 · US
Cooling system for fluid to be cooled
US-2022357080-A1 · Nov 10, 2022 · US
Cooling system for fluid to be cooled
US-11466903-B2 · Oct 11, 2022 · US
Heat pump
US-11441794-B2 · Sep 13, 2022 · US
Systems and methods for determining a fault of an air system for heating, ventilation and/or cooling
US-2022282897-A1 · Sep 8, 2022 · US
Refrigeration and/or liquefaction method, device and system
US-2022275999-A1 · Sep 1, 2022 · US
Cooling and/or liquefying system and method
US-2022268516-A1 · Aug 25, 2022 · US
Cooling and/or liquefying method and system
US-2022260310-A1 · Aug 18, 2022 · US
Air-conditioning apparatus
US-2022260292-A1 · Aug 18, 2022 · US
Air conditioner with fluid line diagnostics using feedback signals from a pump
US-11353251-B2 · Jun 7, 2022 · US
Linear compressor and method for controlling linear compressor
US-11313360-B2 · Apr 26, 2022 · US
Method for suppressing the blockage of miniature joule-thomson cryocooler based on photothermal effect
US-2021389033-A1 · Dec 16, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25B2500/04?
- CPC F25B2500/04 is the Cooperative Patent Classification code for “Clogging.”
- How many patents are filed under CPC F25B2500/04 (Clogging)?
- Our database includes 70 publications tagged with this CPC code.
- Is patent activity under CPC F25B2500/04 growing?
- Publication counts under this code: 7 in 2024 vs 5 in 2025 (latest complete years).