Method of starting and stopping pump apparatuses coupled in series
US-12595799-B2 · Apr 7, 2026 · US
Stopping of pumps, or operating valves, on occurrence of unwanted conditions
Stopping of pumps, or operating valves, on occurrence of unwanted conditions · 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 | F04D15/02 |
| Official title | Stopping of pumps, or operating valves, on occurrence of unwanted conditions |
| Display label | Stopping of pumps, or operating valves, on occurrence of unwanted conditions |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 8 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Drying-up method, cooling-down method, and hot-up method for a pump apparatus
US-2025361877-A1 · Nov 27, 2025 · US
Method of starting and stopping pump apparatuses coupled in series
US-2025341215-A1 · Nov 6, 2025 · US
Motor control device
US-12292054-B2 · May 6, 2025 · US
Autonomous failure prediction and pump control for well optimization
US-12197201-B2 · Jan 14, 2025 · US
Automatic headland fan control
US-12116222-B2 · Oct 15, 2024 · US
Drain pump driving apparatus and laundry treatment machine including the same
US-12006616-B2 · Jun 11, 2024 · US
Fallback prevention valve apparatus, system and method
US-11994003-B2 · May 28, 2024 · US
Sensing device, system and method for a pump
US-11898577-B2 · Feb 13, 2024 · US
Motor control device
US-2024044338-A1 · Feb 8, 2024 · US
Drain pump driving apparatus and laundry treatment machine including the same
US-11859330-B2 · Jan 2, 2024 · US
System for pumping a fluid and method for its operation
US-11846290-B2 · Dec 19, 2023 · US
Shear pin and drive shaft spring brake in electrical submersible pump
US-11795962-B2 · Oct 24, 2023 · US
Robot cleaner and robot cleaning system having the same, and control method of robot cleaning system
US-2023255430-A1 · Aug 17, 2023 · US
Automatic headland fan control
US-2023202777-A1 · Jun 29, 2023 · US
Well site edge analytics
US-2023095709-A1 · Mar 30, 2023 · US
A Sensing Device, System And Method For A Pump
US-2022364565-A1 · Nov 17, 2022 · US
Bilge pump having outside sensing surface with ribs
US-2022136523-A1 · May 5, 2022 · US
Autonomous failure prediction and pump control for well optimization
US-2022090485-A1 · Mar 24, 2022 · US
FallBack Prevention Valve Apparatus, System and Method
US-2022025738-A1 · Jan 27, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D15/02?
- CPC F04D15/02 is the Cooperative Patent Classification code for “Stopping of pumps, or operating valves, on occurrence of unwanted conditions.”
- How many patents are filed under CPC F04D15/02 (Stopping of pumps, or operating valves, on occurrence of unwanted conditions)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC F04D15/02 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).