Air conditioning apparatus
US-2018347846-A1 · Dec 6, 2018 · US
Control of compressors of heat pumps
Control of compressors of heat pumps · 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 | F24H15/38 |
| Official title | Control of compressors of heat pumps |
| Display label | Control of compressors of heat pumps |
| Total patents | 132 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 15 |
| 2017 | 15 |
| 2018 | 18 |
| 2019 | 16 |
| 2020 | 7 |
| 2021 | 13 |
| 2022 | 6 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air-conditioning and hot water supplying composite system
US-10088198-B2 · Oct 2, 2018 · US
Water heater appliance with a cold water bypass
US-2018274793-A1 · Sep 27, 2018 · US
Water heater appliance with a flow meter
US-2018274792-A1 · Sep 27, 2018 · US
Water heater appliance with a cold water bypass
US-10082301-B1 · Sep 25, 2018 · US
Apparatus and method for hybrid water heating and air cooling and control thereof
US-10041702-B2 · Aug 7, 2018 · US
Water Heater Appliance
US-2018163991-A1 · Jun 14, 2018 · US
Heat pump heating and hot-water system
US-9951962-B2 · Apr 24, 2018 · US
Method and system for controlling frequency of variable-frequency compressor in heat pump water heater
US-2018106483-A1 · Apr 19, 2018 · US
Air conditioning system
US-9927133-B2 · Mar 27, 2018 · US
Air conditioning system
US-9927132-B2 · Mar 27, 2018 · US
Hot and cold water air conditioning system
US-9920967-B2 · Mar 20, 2018 · US
Water heater appliance
US-9920953-B2 · Mar 20, 2018 · US
Sealed Refrigeration System and Appliance
US-2018051909-A1 · Feb 22, 2018 · US
Heat-pump equipment
US-2018051894-A1 · Feb 22, 2018 · US
Refrigeration cycle device
US-9897349-B2 · Feb 20, 2018 · US
Residential heat pump water heater
US-9845978-B2 · Dec 19, 2017 · US
Air-conditioning and hot water supplying composite system
US-2017234576-A1 · Aug 17, 2017 · US
Optimised heat pump system
US-2017211829-A1 · Jul 27, 2017 · US
Apparatus and method for controlling indoor airflow for heat pumps
US-9696067-B2 · Jul 4, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24H15/38?
- CPC F24H15/38 is the Cooperative Patent Classification code for “Control of compressors of heat pumps.”
- How many patents are filed under CPC F24H15/38 (Control of compressors of heat pumps)?
- Our database includes 132 publications tagged with this CPC code.
- Is patent activity under CPC F24H15/38 growing?
- Publication counts under this code: 4 in 2024 vs 16 in 2025 (latest complete years).