Methods and apparatus to remove liquid from a housing
US-12571411-B2 · Mar 10, 2026 · US
at least one pump being of the non-positive-displacement type
at least one pump being of the non-positive-displacement type · 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 | F04B23/14 |
| Official title | at least one pump being of the non-positive-displacement type |
| Display label | at least one pump being of the non-positive-displacement type |
| Total patents | 51 |
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 | 5 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 7 |
| 2025 | 7 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Accumulator for Prevention of Hydraulic Pump Cavitation
US-2026049604-A1 · Feb 19, 2026 · US
Multi-pressure integrated air pump
US-2026028973-A1 · Jan 29, 2026 · US
Multi-pressure integrated air pump
US-12448958-B2 · Oct 21, 2025 · US
Pump arrangement
US-2025270994-A1 · Aug 28, 2025 · US
Variable displacement pump (VDP) systems with dry-out centrifugal main pump
US-12366207-B2 · Jul 22, 2025 · US
Variable displacement pump (VDP) systems with dual dry out pumps
US-12366206-B2 · Jul 22, 2025 · US
Cementing equipment and control method
US-2025198253-A1 · Jun 19, 2025 · US
Variable displacement pump (vdp) systems with dry-out centrifugal main pump
US-2025084795-A1 · Mar 13, 2025 · US
Variable displacement pump (vdp) systems with dual dry out pumps
US-2025084838-A1 · Mar 13, 2025 · US
Methods and apparatus to remove liquid from a housing
US-2024410398-A1 · Dec 12, 2024 · US
Hydrogen compressing assembly, hydrogen production plant, and compressing method
US-2024369054-A1 · Nov 7, 2024 · US
Turbo type pump and fluid supply unit
US-12104615-B2 · Oct 1, 2024 · US
Reciprocating pump systems
US-12044253-B2 · Jul 23, 2024 · US
Fluid supply system
US-12044179-B2 · Jul 23, 2024 · US
Recirculation gas flow control and distribution module for fuel cells
US-2024234758-A1 · Jul 11, 2024 · US
Turbo type pump and fluid supply unit
US-2024035484-A1 · Feb 1, 2024 · US
Booster-ejector system for capturing and recycling leakage fluids
US-11835183-B1 · Dec 5, 2023 · US
Multi-pressure integrated air pump
US-2023332587-A1 · Oct 19, 2023 · US
Multi-pump apparatus of cooling system
US-11739756-B2 · Aug 29, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B23/14?
- CPC F04B23/14 is the Cooperative Patent Classification code for “at least one pump being of the non-positive-displacement type.”
- How many patents are filed under CPC F04B23/14 (at least one pump being of the non-positive-displacement type)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC F04B23/14 growing?
- Publication counts under this code: 7 in 2024 vs 7 in 2025 (latest complete years).