Transportation refrigeration unit and method of measuring quantity of refrigerant in the same
US-12498155-B2 · Dec 16, 2025 · US
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Details for charging or discharging refrigerants; Service stations therefor
Details for charging or discharging refrigerants; Service stations therefor · 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 | F25B2345/00 |
| Official title | Details for charging or discharging refrigerants; Service stations therefor |
| Display label | Details for charging or discharging refrigerants; Service stations therefor |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 6 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coil assembly plate with compensator accommodation
US-12392509-B2 · Aug 19, 2025 · US
Gas replacement method for expander of cryocooler, cryocooler, and gas replacement pipe
US-2024418438-A1 · Dec 19, 2024 · US
Refrigerant handling device and refrigerant handling method
US-2024210081-A1 · Jun 27, 2024 · US
Liquid cooling server deployment and delivery apparatus and operation
US-11943900-B2 · Mar 26, 2024 · US
Coil assembly plate with compensator accommodation
US-2024053030-A1 · Feb 15, 2024 · US
Transportation refrigeration unit and method of measuring quantity of refrigerant in the same
US-2023392841-A1 · Dec 7, 2023 · US
Membrane purge system
US-2023384009-A1 · Nov 30, 2023 · US
Liquid cooling server deployment and delivery apparatus and operation
US-2023088329-A1 · Mar 23, 2023 · US
Chiller refrigeration circuit recharging apparatus and method
US-2021041152-A1 · Feb 11, 2021 · US
Air conditoner and method for controlling an air conditioner
US-10794621-B2 · Oct 6, 2020 · US
Refrigeration system with superheating, sub-cooling and refrigerant charge level control
US-10527332-B2 · Jan 7, 2020 · US
Refrigerant level management in heat exchangers of an HVAC chiller
US-10422559-B2 · Sep 24, 2019 · US
Variable refrigerant volume system and control method thereof
US-10317118-B2 · Jun 11, 2019 · US
Air conditoner and method for controlling an air conditioner
US-2018142928-A1 · May 24, 2018 · US
Refrigeration System With Superheating, Sub-Cooling and Refrigerant Charge Level Control
US-2018073789-A1 · Mar 15, 2018 · US
Refrigeration system with superheating, sub-cooling and refrigerant charge level control
US-9874384-B2 · Jan 23, 2018 · US
Variable refrigerant volume system and control method thereof
US-2017284695-A1 · Oct 5, 2017 · US
Refrigerant management in a hvac system
US-2017268807-A1 · Sep 21, 2017 · US
Refrigeration System With Superheating, Sub-Cooling and Refrigerant Charge Level Control
US-2017198953-A1 · Jul 13, 2017 · US