3D printed filter center tube
US-12515148-B2 · Jan 6, 2026 · US
with corrugated, folded filtering elements
with corrugated, folded filtering elements · 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 | B01D29/031 |
| Official title | {with corrugated, folded filtering elements} |
| Display label | with corrugated, folded filtering elements |
| Total patents | 33 |
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 | 4 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 2 |
| 2020 | 4 |
| 2021 | 8 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 7 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter material comprising nanofiber layer and filter element composed of such filter material
US-2025288928-A1 · Sep 18, 2025 · US
Multi-layer, biodegradable composites for air filtration
US-12109520-B2 · Oct 8, 2024 · US
Fluted filtration media, filtration media packs, and filtration elements
US-12097459-B2 · Sep 24, 2024 · US
Nonwoven material adapted for high efficiency air filtration
US-2024279858-A1 · Aug 22, 2024 · US
Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US-12048888-B2 · Jul 30, 2024 · US
3d printed filter center tube
US-2024165543-A1 · May 23, 2024 · US
3D printed filter center tube
US-11925885-B2 · Mar 12, 2024 · US
Filter element with fluted filter media
US-11865489-B2 · Jan 9, 2024 · US
Filtration media packs produced using additive manufacturing
US-11707892-B2 · Jul 25, 2023 · US
Multi-layer, biodegradable composites for air filtration
US-2022096977-A1 · Mar 31, 2022 · US
Liquid Filter
US-2021283533-A1 · Sep 16, 2021 · US
Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US-2021268408-A1 · Sep 2, 2021 · US
3d printed filter center tube
US-2021205739-A1 · Jul 8, 2021 · US
3D printed filter center tube
US-11020690-B2 · Jun 1, 2021 · US
Filtration media packs produced using additive manufacturing
US-2021154942-A1 · May 27, 2021 · US
Filtration media packs produced using additive manufacturing
US-10981335-B2 · Apr 20, 2021 · US
Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US-10946313-B2 · Mar 16, 2021 · US
Filter element with fluted filter media
US-2021031133-A1 · Feb 4, 2021 · US
Fluted filtration media, filtration media packs, and filtration elements
US-2020360852-A1 · Nov 19, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D29/031?
- CPC B01D29/031 is the Cooperative Patent Classification code for “with corrugated, folded filtering elements.”
- How many patents are filed under CPC B01D29/031 (with corrugated, folded filtering elements)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC B01D29/031 growing?
- Publication counts under this code: 7 in 2024 vs 1 in 2025 (latest complete years).