Expansion tank
US-2021301713-A1 · Sep 30, 2021 · US
Liquid-coolant {filling}, overflow, venting, or draining devices (automatic draining during freezing conditions F01P11/20)
Liquid-coolant {filling}, overflow, venting, or draining devices (automatic draining during freezing conditions F01P11/20) · 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 | F01P11/02 |
| Official title | Liquid-coolant {filling}, overflow, venting, or draining devices (automatic draining during freezing conditions F01P11/20) |
| Display label | Liquid-coolant {filling}, overflow, venting, or draining devices (automatic draining during freezing conditions F01P11/20) |
| Total patents | 88 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 7 |
| 2017 | 10 |
| 2018 | 16 |
| 2019 | 7 |
| 2020 | 10 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 3 |
| 2025 | 9 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid method and system
US-11022012-B2 · Jun 1, 2021 · US
Cooling system of an internal combustion engine of a motor vehicle
US-10934926-B2 · Mar 2, 2021 · US
Piston cooling for opposed-piston engine
US-10871099-B2 · Dec 22, 2020 · US
Reservoir tank with integrated ejector
US-2020386145-A1 · Dec 10, 2020 · US
Water jacket of engine and engine cooling system having the same
US-10858981-B2 · Dec 8, 2020 · US
Device for conducting air with cooling chamber venting for an internal combustion engine
US-10774727-B2 · Sep 15, 2020 · US
Pressure cap for cooling system having variable opening pressure
US-10697718-B2 · Jun 30, 2020 · US
Water jacket of engine and engine cooling system having the same
US-2020165956-A1 · May 28, 2020 · US
Cooling-water control valve device
US-10648395-B2 · May 12, 2020 · US
Cooling system of an internal combustion engine of a motor vehicle
US-2020072119-A1 · Mar 5, 2020 · US
Methods and systems for a ventilating arrangement
US-10557399-B2 · Feb 11, 2020 · US
Methods and system for a degas bottle
US-2020009939-A1 · Jan 9, 2020 · US
Work vehicle
US-10487711-B2 · Nov 26, 2019 · US
Cooling system for a work vehicle
US-10352229-B2 · Jul 16, 2019 · US
Cooling system for a work vehicle
US-2019186344-A1 · Jun 20, 2019 · US
Fluid loop filling assembly and filling method
US-10267212-B1 · Apr 23, 2019 · US
Fluid loop filling assembly and filling method
US-2019112966-A1 · Apr 18, 2019 · US
Estimator and estimator system
US-10208649-B2 · Feb 19, 2019 · US
Cooling-water control valve device
US-2019003370-A1 · Jan 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01P11/02?
- CPC F01P11/02 is the Cooperative Patent Classification code for “Liquid-coolant {filling}, overflow, venting, or draining devices (automatic draining during freezing conditions F01P11/20).”
- How many patents are filed under CPC F01P11/02 (Liquid-coolant {filling}, overflow, venting, or draining devices (automatic draining during freezing conditions F01P11/20))?
- Our database includes 88 publications tagged with this CPC code.
- Is patent activity under CPC F01P11/02 growing?
- Publication counts under this code: 3 in 2024 vs 9 in 2025 (latest complete years).