Filter, filter device, and method of use
US-10413852-B2 · Sep 17, 2019 · US
Particle separators, e.g. dust precipitators, using loose filtering material
Particle separators, e.g. dust precipitators, using loose filtering material · 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 | B01D46/30 |
| Official title | Particle separators, e.g. dust precipitators, using loose filtering material |
| Display label | Particle separators, e.g. dust precipitators, using loose filtering material |
| Total patents | 129 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 10 |
| 2017 | 18 |
| 2018 | 13 |
| 2019 | 9 |
| 2020 | 14 |
| 2021 | 7 |
| 2022 | 8 |
| 2023 | 10 |
| 2024 | 21 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stacked body
US-10413856-B2 · Sep 17, 2019 · US
Centrifugal air separators
US-2019247785-A1 · Aug 15, 2019 · US
Filter medium for deactivating allergens
US-10315146-B2 · Jun 11, 2019 · US
Centrifugal air separators
US-10315158-B2 · Jun 11, 2019 · US
Modular filter capsule apparatus
US-10279288-B2 · May 7, 2019 · US
Removable basket for catalytic reactor
US-2019111372-A1 · Apr 18, 2019 · US
Server dust collector
US-2019111375-A1 · Apr 18, 2019 · US
Heat treatment furnace device and method for producing carbon fiber bundle
US-2018339242-A1 · Nov 29, 2018 · US
Filter, filter device, and method of use
US-2018280848-A1 · Oct 4, 2018 · US
Method for manufacturing honeycomb structure
US-2018283783-A1 · Oct 4, 2018 · US
Method for manufacturing honeycomb structure
US-2018283784-A1 · Oct 4, 2018 · US
Method for manufacturing honeycomb structure
US-2018283785-A1 · Oct 4, 2018 · US
Polyurethane filter foam
US-10077331-B2 · Sep 18, 2018 · US
Honeycomb structure
US-2018257999-A1 · Sep 13, 2018 · US
Gas separation cartridge
US-10071333-B2 · Sep 11, 2018 · US
Filter element
US-2018154298-A1 · Jun 7, 2018 · US
Air Conditioner with selective filtering for air purification
US-9945590-B2 · Apr 17, 2018 · US
Stacked body
US-2018085698-A1 · Mar 29, 2018 · US
Polyurethane filter foam
US-2018057630-A1 · Mar 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/30?
- CPC B01D46/30 is the Cooperative Patent Classification code for “Particle separators, e.g. dust precipitators, using loose filtering material.”
- How many patents are filed under CPC B01D46/30 (Particle separators, e.g. dust precipitators, using loose filtering material)?
- Our database includes 129 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/30 growing?
- Publication counts under this code: 21 in 2024 vs 5 in 2025 (latest complete years).