Batch-type apparatus for filtering
US-12576351-B2 · Mar 17, 2026 · US
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using gas bubbles, e.g. air
using gas bubbles, e.g. air · 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 | B01D2201/087 |
| Official title | using gas bubbles, e.g. air |
| Display label | using gas bubbles, e.g. air |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 3 |
| 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 for cleaning metal filter
US-12427461-B2 · Sep 30, 2025 · US
Water sampling immersion probe
US-12287316-B2 · Apr 29, 2025 · US
Apparatus and Method for Cleaning Metal Filter
US-2024359120-A1 · Oct 31, 2024 · US
Apparatus and method for cleaning metal filter
US-12064720-B2 · Aug 20, 2024 · US
Layered media backwash with internal draft tube
US-2024246011-A1 · Jul 25, 2024 · US
Batch-type apparatus for filtering
US-2023364537-A1 · Nov 16, 2023 · US
Water sampling immersion probe
US-2022268755-A1 · Aug 25, 2022 · US
Apparatus and Method for Cleaning Metal Filter
US-2021387124-A1 · Dec 16, 2021 · US
Multistage fiber filtering apparatus capable of selectively filtering
US-11192050-B2 · Dec 7, 2021 · US
Regenerative Media Filtration Apparatus Improvements
US-2021346824-A1 · Nov 11, 2021 · US
Fiber filtering apparatus
US-11000787-B2 · May 11, 2021 · US
Modular backwash assembly and method for using the same
US-10967308-B2 · Apr 6, 2021 · US
Multistage fiber filtering apparatus capable of selectively filtering
US-2020179838-A1 · Jun 11, 2020 · US
Fiber filtering apparatus
US-2020122060-A1 · Apr 23, 2020 · US
Multistage fiber filtering apparatus capable of selectively filtering
US-10596495-B2 · Mar 24, 2020 · US
Fiber filtering apparatus
US-10549217-B2 · Feb 4, 2020 · US
Modular backwash assembly and method for using the same
US-2019151779-A1 · May 23, 2019 · US
Fiber filtering apparatus
US-2018028945-A1 · Feb 1, 2018 · US
Multistage Fiber Filtering Apparatus Capable of Selectively Filtering
US-2017368482-A1 · Dec 28, 2017 · US