Filter media
US-2026061355-A1 · Mar 5, 2026 · US
Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms · 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 | B01D46/54 |
| Official title | Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms |
| Display label | Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms |
| Total patents | 36 |
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 | 7 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 2 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Integrated dust extractor and power tool
US-2025222549-A1 · Jul 10, 2025 · US
Fine filter part kit for a dust extractor and a method for removing a fine filter part
US-12337272-B2 · Jun 24, 2025 · US
Inline filtration for steam applications
US-2025161858-A1 · May 22, 2025 · US
Integrated dust extractor and power tool
US-12269136-B2 · Apr 8, 2025 · US
Fast-track negative pressure isolation system for respiratory infectious disease control
US-12263436-B2 · Apr 1, 2025 · US
Filter media including a waved filtration layer having a gradient
US-2025099888-A1 · Mar 27, 2025 · US
Integrated dust extractor and power tool
US-2024123560-A1 · Apr 18, 2024 · US
Separation device and separation method
US-11958011-B2 · Apr 16, 2024 · US
Integrated dust extractor and power tool
US-11872665-B2 · Jan 16, 2024 · US
Flow grid and ambient air purification device
US-2023294029-A1 · Sep 21, 2023 · US
A fine filter part kit for a dust extractor and a method for removing a fine filter part
US-2023233979-A1 · Jul 27, 2023 · US
Porous polytetrafluoroethylene membrane having a macro-textured surface and method of making the same
US-2023015482-A1 · Jan 19, 2023 · US
Fast-track negative pressure isolation system for respiratory infectious disease control
US-2023011256-A1 · Jan 12, 2023 · US
Integrated dust extractor and power tool
US-2022314384-A1 · Oct 6, 2022 · US
Thin-film filter, thin-film filter substrate, method of manufacturing the thin-film filter, method of manufacturing the thin-film filter substrate, MEMS microphone and method of manufacturing the MEMS microphone
US-11425508-B2 · Aug 23, 2022 · US
Air Purification Apparatuses, Systems, and Methods for Removing Particulates, Volatile Organic Compounds, and Nitrous Oxide-Containing Compounds
US-2022234002-A1 · Jul 28, 2022 · US
Separation device and separation method
US-2022080349-A1 · Mar 17, 2022 · US
Thin-Film Filter, Thin-Film Filter Substrate, Method of Manufacturing the Thin-Film Filter, Method of Manufacturing the Thin-Film Filter Substrate, MEMS Microphone and Method of Manufacturing the MEMS Microphone
US-2021051417-A1 · Feb 18, 2021 · US
Air filter for bleed valve assembly
US-10512876-B2 · Dec 24, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/54?
- CPC B01D46/54 is the Cooperative Patent Classification code for “Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms.”
- How many patents are filed under CPC B01D46/54 (Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/54 growing?
- Publication counts under this code: 3 in 2024 vs 6 in 2025 (latest complete years).