Floating oscillating water column-type wave energy power generation
US-12492674-B2 · Dec 9, 2025 · US
Valve arrangements (F03B3/10 takes precedence; adjustable wicket gates F03B3/183; valves in general F16K)
Valve arrangements (F03B3/10 takes precedence; adjustable wicket gates F03B3/183; valves in general F16K) · 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 | F03B11/004 |
| Official title | {Valve arrangements (F03B3/10 takes precedence; adjustable wicket gates F03B3/183; valves in general F16K)} |
| Display label | Valve arrangements (F03B3/10 takes precedence; adjustable wicket gates F03B3/183; valves in general F16K) |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 1 |
| 2023 | 6 |
| 2024 | 3 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Energy storage system
US-12270369-B2 · Apr 8, 2025 · US
Energy recovery valve system with lateral flow valve for controlling the fluid flow in a duct
US-12234798-B2 · Feb 25, 2025 · US
Water turbine generator with bypass flow control
US-2025043760-A1 · Feb 6, 2025 · US
Systems for harvesting rotational wheel energy for landing gear retraction
US-2024253809-A1 · Aug 1, 2024 · US
Systems for harvesting rotational wheel energy for landing gear retraction
US-11981447-B2 · May 14, 2024 · US
Conical turbine hydraulic machine
US-2024044312-A1 · Feb 8, 2024 · US
Energy storage system
US-2023383718-A1 · Nov 30, 2023 · US
Floating oscillating water column-type wave energy power generation apparatus
US-2023366369-A1 · Nov 16, 2023 · US
Energy Recovery Valve System with Lateral Flow Valve for Controlling the Fluid Flow in a Duct
US-2023287859-A1 · Sep 14, 2023 · US
Startup method of Francis turbine and Francis turbine
US-11608809-B2 · Mar 21, 2023 · US
Startup method of francis turbine and francis turbine
US-11566597-B2 · Jan 31, 2023 · US
Wave power utilization device and control method of wave power utilization device
US-11560871-B2 · Jan 24, 2023 · US
Wave power utilization device and control method of wave power utilization device
US-2022120254-A1 · Apr 21, 2022 · US
Startup method of francis turbine and francis turbine
US-2021396204-A1 · Dec 23, 2021 · US
Startup method of francis turbine and francis turbine
US-2021396205-A1 · Dec 23, 2021 · US
Device and method for ring gate closing optimization
US-11187251-B2 · Nov 30, 2021 · US
Systems for harvesting rotational wheel energy for landing gear retraction
US-2021214096-A1 · Jul 15, 2021 · US
Hydraulic generator, spouting apparatus, and method for manufacturing hydraulic generator
US-10934992-B2 · Mar 2, 2021 · US
Device and Method for Ring Gate Closing Optimization
US-2020386247-A1 · Dec 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F03B11/004?
- CPC F03B11/004 is the Cooperative Patent Classification code for “Valve arrangements (F03B3/10 takes precedence; adjustable wicket gates F03B3/183; valves in general F16K).”
- How many patents are filed under CPC F03B11/004 (Valve arrangements (F03B3/10 takes precedence; adjustable wicket gates F03B3/183; valves in general F16K))?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC F03B11/004 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).