Submerged fin for wave energy conversion
US-12454934-B2 · Oct 28, 2025 · US
by varying liquid flow
by varying liquid flow · 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 | F03B15/02 |
| Official title | by varying liquid flow |
| Display label | by varying liquid flow |
| Total patents | 35 |
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 | 3 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 2 |
| 2024 | 8 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Two-body variable geometry wave energy converter
US-12215662-B2 · Feb 4, 2025 · US
Method for starting a turbine in a pump mode
US-12180923-B2 · Dec 31, 2024 · US
Submerged fin for wave energy conversion
US-2024376857-A1 · Nov 14, 2024 · US
Two-body variable geometry wave energy converter
US-2024344495-A1 · Oct 17, 2024 · US
Method for starting a turbine in a pump mode
US-2024301852-A1 · Sep 12, 2024 · US
Systems for harvesting rotational wheel energy for landing gear retraction
US-2024253809-A1 · Aug 1, 2024 · US
Hydroelectric turbine installation and operation method for enhancing the level of dissolved oxygen
US-2024159209-A1 · May 16, 2024 · US
Systems for harvesting rotational wheel energy for landing gear retraction
US-11981447-B2 · May 14, 2024 · US
Method for starting a turbine in a pump mode
US-11873789-B2 · Jan 16, 2024 · US
Method for starting a turbine in a pump mode
US-2022389897-A1 · Dec 8, 2022 · US
Hydroelectric power generation system
US-11313343-B2 · Apr 26, 2022 · US
System for generating electrical energy from the wave motion of the sea
US-11199173-B2 · Dec 14, 2021 · US
Hydroelectric power generation system
US-11118558-B2 · Sep 14, 2021 · US
Method for controlling a wave power system by means of a control obtained by minimizing an objective function weighted and discretized by the trapezoidal rule
US-11111897-B2 · Sep 7, 2021 · US
Systems for harvesting rotational wheel energy for landing gear retraction
US-2021214096-A1 · Jul 15, 2021 · US
Francis turbine and method of operating same
US-11028815-B2 · Jun 8, 2021 · US
System for generating electrical energy from the wave motion of the sea
US-2021164434-A1 · Jun 3, 2021 · US
Method for controlling a wave power system by means of an integral proportional-control law
US-10815959-B2 · Oct 27, 2020 · US
Method for controlling a wave power system by means of an integral proportional- control law
US-2020095972-A1 · Mar 26, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F03B15/02?
- CPC F03B15/02 is the Cooperative Patent Classification code for “by varying liquid flow.”
- How many patents are filed under CPC F03B15/02 (by varying liquid flow)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC F03B15/02 growing?
- Publication counts under this code: 8 in 2024 vs 2 in 2025 (latest complete years).