Hydro-cyclone system
US-12521735-B2 · Jan 13, 2026 · US
Construction of the overflow ducting, e.g. diffusing or spiral exits
Construction of the overflow ducting, e.g. diffusing or spiral exits · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B04C5/12 |
| Official title | Construction of the overflow ducting, e.g. diffusing or spiral exits |
| Display label | Construction of the overflow ducting, e.g. diffusing or spiral exits |
| Total patents | 51 |
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 | 7 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 1 |
| 2020 | 9 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus and method of trapping an exhaust material from a substrate-processing process and apparatus for processing a substrate including the trapping apparatus
US-2025352949-A1 · Nov 20, 2025 · US
Apparatus trapping an exhaust material from a substrate-processing process and apparatus for processing a substrate including the trapping apparatus
US-12390763-B2 · Aug 19, 2025 · US
Cyclone collector for battery pack and battery device including the same
US-2024413475-A1 · Dec 12, 2024 · US
Cyclone separator
US-12070759-B2 · Aug 27, 2024 · US
Handheld vacuum cleaner
US-12035872-B2 · Jul 16, 2024 · US
Ion removing system
US-11939250-B2 · Mar 26, 2024 · US
Accumulator, optionally in combination with an internal heat exchanger in a shared housing
US-11865895-B2 · Jan 9, 2024 · US
Down-hole separator for in-situ gas-lift
US-11828154-B2 · Nov 28, 2023 · US
Gas-liquid separation device
US-2023372840-A1 · Nov 23, 2023 · US
Down-hole separator for in-situ gas-lift
US-2023220759-A1 · Jul 13, 2023 · US
Apparatus and method of trapping an exhaust material from a substrate-processing process and apparatus for processing a substrate including the trapping apparatus
US-2023068823-A1 · Mar 2, 2023 · US
Hydro-cyclone system
US-2023037357-A1 · Feb 9, 2023 · US
Cyclone separator arrangement
US-2023001432-A1 · Jan 5, 2023 · US
Handheld vacuum cleaner
US-2022378259-A1 · Dec 1, 2022 · US
Unit for treating a drilling mud and corresponding method
US-11465077-B2 · Oct 11, 2022 · US
Handheld vacuum cleaner
US-11432690-B2 · Sep 6, 2022 · US
Handheld vacuum cleaner
US-11357370-B2 · Jun 14, 2022 · US
Dirt separator
US-11297987-B2 · Apr 12, 2022 · US
Cyclone separator
US-2022088615-A1 · Mar 24, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B04C5/12?
- CPC B04C5/12 is the Cooperative Patent Classification code for “Construction of the overflow ducting, e.g. diffusing or spiral exits.”
- How many patents are filed under CPC B04C5/12 (Construction of the overflow ducting, e.g. diffusing or spiral exits)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC B04C5/12 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).