Equalization tank assemblies for wastewater systems
US-12546280-B2 · Feb 10, 2026 · US
by speed, e.g. by measuring electric frequency or liquid flow
by speed, e.g. by measuring electric frequency or 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 | F03B15/08 |
| Official title | by speed, e.g. by measuring electric frequency or liquid flow |
| Display label | by speed, e.g. by measuring electric frequency or liquid flow |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 7 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reservoir-regulating digital load control
US-2026028958-A1 · Jan 29, 2026 · US
Equalization tank assemblies for wastewater systems
US-2025163881-A1 · May 22, 2025 · US
Method and device for determining suction height of variable speed units
US-12104566-B2 · Oct 1, 2024 · US
Hydroelectric turbine installation and operation method for enhancing the level of dissolved oxygen
US-2024159209-A1 · May 16, 2024 · US
Hydroelectric power generation system
US-11920553-B2 · Mar 5, 2024 · US
Reservoir-regulating digital load control
US-11898530-B2 · Feb 13, 2024 · US
Hydropower generation system and power generator control method
US-11898532-B2 · Feb 13, 2024 · US
Variable speed reconfigurable pump/turbine clusters
US-2024018934-A1 · Jan 18, 2024 · US
Method and device for determining suction height of variable speed units
US-2024003327-A1 · Jan 4, 2024 · US
Startup method of Francis turbine and Francis turbine
US-11608809-B2 · Mar 21, 2023 · US
Method for starting a hydraulic turbine
US-11581743-B2 · Feb 14, 2023 · US
Startup method of francis turbine and francis turbine
US-11566597-B2 · Jan 31, 2023 · US
Reservoir-regulating digital load control
US-2022316437-A1 · Oct 6, 2022 · US
Hydroelectric power generation system
US-2022235733-A1 · Jul 28, 2022 · US
Hydropower generation system and power generator control method
US-2022213864-A1 · Jul 7, 2022 · US
Stabilization of hydraulic machines with S-zone characteristics
US-11239778-B2 · Feb 1, 2022 · US
Startup method of francis turbine and francis turbine
US-2021396204-A1 · Dec 23, 2021 · US
Method for Starting a Hydraulic Turbine
US-2021399552-A1 · Dec 23, 2021 · US
Startup method of francis turbine and francis turbine
US-2021396205-A1 · Dec 23, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F03B15/08?
- CPC F03B15/08 is the Cooperative Patent Classification code for “by speed, e.g. by measuring electric frequency or liquid flow.”
- How many patents are filed under CPC F03B15/08 (by speed, e.g. by measuring electric frequency or liquid flow)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC F03B15/08 growing?
- Publication counts under this code: 7 in 2024 vs 1 in 2025 (latest complete years).