Active management of refrigerant charge between condenser loops
US-2024044559-A1 · Feb 8, 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 | F25B2500/23 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 95 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 8 |
| 2018 | 17 |
| 2019 | 11 |
| 2020 | 14 |
| 2021 | 5 |
| 2022 | 6 |
| 2023 | 4 |
| 2024 | 9 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air conditioner
US-10845098-B2 · Nov 24, 2020 · US
System for refrigerant charge verification
US-10775084-B2 · Sep 15, 2020 · US
Refrigeration cycle apparatus
US-10767912-B2 · Sep 8, 2020 · US
Refrigeration cycle apparatus determining refrigerant condenser amount
US-10684051-B2 · Jun 16, 2020 · US
Discharge pressure calculation from torque in an HVAC system
US-10619903-B2 · Apr 14, 2020 · US
Air conditioning system
US-10619892-B2 · Apr 14, 2020 · US
Refrigeration cycle apparatus and refrigeration cycle apparatus abnormality detecting system
US-10598417-B2 · Mar 24, 2020 · US
Air conditioner
US-10527322-B2 · Jan 7, 2020 · US
Hvac refrigerant charging and relieving systems and methods
US-2020003467-A1 · Jan 2, 2020 · US
System for refrigerant charge verification
US-10488090-B2 · Nov 26, 2019 · US
Manifold sightglass for charging microchannel system
US-10473373-B2 · Nov 12, 2019 · US
Method of monitoring charge condition of heat pump system
US-10443863-B2 · Oct 15, 2019 · US
Air-conditioning apparatus with operability based on flammable refrigerant concentration information in outdoor unit
US-10422548-B2 · Sep 24, 2019 · US
Refrigerant charge management systems and methods
US-2019277548-A1 · Sep 12, 2019 · US
Active refrigerant charge compensation for refrigeration and air conditioning systems
US-10345021-B2 · Jul 9, 2019 · US
Redistributing refrigerant between an evaporator and a condenser of a vapor compression system
US-2019203999-A1 · Jul 4, 2019 · US
Refrigeration device
US-2019203995-A1 · Jul 4, 2019 · US
Variable refrigerant volume system and control method thereof
US-10317118-B2 · Jun 11, 2019 · US
Manifold sightglass for charging microchannel system
US-2019032975-A1 · Jan 31, 2019 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25B2500/23?
- CPC F25B2500/23 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F25B2500/23 (Mechanical Engineering)?
- Our database includes 95 publications tagged with this CPC code.
- Is patent activity under CPC F25B2500/23 growing?
- Publication counts under this code: 9 in 2024 vs 6 in 2025 (latest complete years).