Ejector-enhanced heat recovery refrigeration system
US-12392527-B2 · Aug 19, 2025 · US
Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P3/22 {; evaporation or evaporation apparatus for physical or chemical purposes, e.g. evaporation of liquids for gas phase reactions B01B1/005})
Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P3/22 {; evaporation or evaporation apparatus for physical or chemical purposes, e.g. evaporation of liquids for gas phase reactions B01B1/005}) · 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 | F01P9/02 |
| Official title | Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P3/22 {; evaporation or evaporation apparatus for physical or chemical purposes, e.g. evaporation of liquids for gas phase reactions B01B1/005}) |
| Display label | Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P3/22 {; evaporation or evaporation apparatus for physical or chemical purposes, e.g. evaporation of liquids for gas phase reactions B01B1/005}) |
| Total patents | 52 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 12 |
| 2020 | 6 |
| 2021 | 10 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for sprinkling a heat exchanger
US-2024116334-A1 · Apr 11, 2024 · US
Car motor cooling apparatus
US-11837944-B2 · Dec 5, 2023 · US
Systems and methods for reducing engine overheating using liquid fuel
US-11473491-B2 · Oct 18, 2022 · US
Ejector-Enhanced Heat Recovery Refrigeration System
US-2022227198-A1 · Jul 21, 2022 · US
Ejector-enhanced heat recovery refrigeration system
US-11300327-B2 · Apr 12, 2022 · US
Evaporative cooling system
US-11268768-B2 · Mar 8, 2022 · US
Cooling device for amphibious vehicle and amphibious vehicle
US-11179988-B2 · Nov 23, 2021 · US
Cooler for cooling an exhaust gas discharged from an engine undergoing test
US-11125650-B2 · Sep 21, 2021 · US
Cylinder specific engine cooling
US-11105300-B2 · Aug 31, 2021 · US
Cooling systems for marine engines having a supercharger
US-11073116-B1 · Jul 27, 2021 · US
Car motor cooling apparatus
US-2021175779-A1 · Jun 10, 2021 · US
Engine cooling system with two thermostats, including a closed loop in a Rankine cycle
US-11008928-B2 · May 18, 2021 · US
Cooling device for amphibious vehicle and amphibious vehicle
US-2021122203-A1 · Apr 29, 2021 · US
Coolant delivery device for a cooling system of an internal combustion engine, in particular of a motor vehicle, cooling system, and internal combustion engine
US-10989101-B2 · Apr 27, 2021 · US
Waste heat recovery with active coolant pressure control system
US-10914228-B2 · Feb 9, 2021 · US
Method and system for water usage on-board a vehicle
US-10913414-B2 · Feb 9, 2021 · US
Cylinder specific engine cooling
US-2020355141-A1 · Nov 12, 2020 · US
Systems and methods for reducing engine overheating using liquid fuel
US-2020300155-A1 · Sep 24, 2020 · US
Systems and methods for reducing engine overheating using liquid fuel
US-10746086-B2 · Aug 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01P9/02?
- CPC F01P9/02 is the Cooperative Patent Classification code for “Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P3/22 {; evaporation or evaporation apparatus for physical or chemical purposes, e.g. evaporation of liquids for gas phase reactions B01B1/005}).”
- How many patents are filed under CPC F01P9/02 (Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P3/22 {; evaporation or evaporation apparatus for physical or chemical purposes, e.g. evaporation of liquids for gas phase reactions B01B1/005}))?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC F01P9/02 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).