Filtering device, in particular for the air to be supplied to a fuel cell
US-10164280-B2 · Dec 25, 2018 · US
comprising particulate additives, e.g. adsorbents
comprising particulate additives, e.g. adsorbents · 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 | B01D2239/0407 |
| Official title | comprising particulate additives, e.g. adsorbents |
| Display label | comprising particulate additives, e.g. adsorbents |
| Total patents | 383 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 14 |
| 2017 | 22 |
| 2018 | 21 |
| 2019 | 26 |
| 2020 | 30 |
| 2021 | 48 |
| 2022 | 49 |
| 2023 | 63 |
| 2024 | 30 |
| 2025 | 52 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Catalytic filter material
US-2018345190-A1 · Dec 6, 2018 · US
Activated carbon fiber filter media laminate
US-2018311600-A1 · Nov 1, 2018 · US
Device for whole blood separation
US-2018136194-A1 · May 17, 2018 · US
Pattern coated filter and method
US-2018111074-A1 · Apr 26, 2018 · US
Recirculation filter for an electronics enclosure
US-2018085693-A1 · Mar 29, 2018 · US
Antimicrobial filter medium and cabin air filter
US-2018085697-A1 · Mar 29, 2018 · US
Filter material for air filter
US-2018056219-A1 · Mar 1, 2018 · US
Functional protective material with a reactively finished membrane and protective clothing produced therewith
US-2017368382-A1 · Dec 28, 2017 · US
Filtering device, in particular for the air to be supplied to a fuel cell
US-2017358812-A1 · Dec 14, 2017 · US
Recirculation filter for an enclosure
US-2017333820-A1 · Nov 23, 2017 · US
Non-woven electret fibrous webs and methods of making same
US-9802187-B2 · Oct 31, 2017 · US
Filtering device, in particular for the air to be supplied to a fuel cell
US-9748591-B2 · Aug 29, 2017 · US
Air filter for fuel cell vehicle
US-2017239604-A1 · Aug 24, 2017 · US
Long-life air filter for automobiles and method of manufacturing the long-life air filter
US-2017225110-A1 · Aug 10, 2017 · US
Formation and immobilization of small particles by using polyelectrolyte multilayers
US-9718013-B2 · Aug 1, 2017 · US
Styrene-acrylonitrile fine fibers, filter media, recirculation filters, and methods
US-2017197163-A1 · Jul 13, 2017 · US
Web comprising fine fiber and reactive, adsorptive or absorptive particulate
US-2017151515-A1 · Jun 1, 2017 · US
Filter medium for deactivating allergens
US-2017120178-A1 · May 4, 2017 · US
Deodorizing mask
US-2017100503-A1 · Apr 13, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2239/0407?
- CPC B01D2239/0407 is the Cooperative Patent Classification code for “comprising particulate additives, e.g. adsorbents.”
- How many patents are filed under CPC B01D2239/0407 (comprising particulate additives, e.g. adsorbents)?
- Our database includes 383 publications tagged with this CPC code.
- Is patent activity under CPC B01D2239/0407 growing?
- Publication counts under this code: 30 in 2024 vs 52 in 2025 (latest complete years).