Exhaust treatment method and apparatus having particulate filters and scr
US-2024159174-A1 · May 16, 2024 · US
of the honeycomb walls or cells
of the honeycomb walls or cells · 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 | B01D46/2429 |
| Official title | {of the honeycomb walls or cells} |
| Display label | of the honeycomb walls or cells |
| Total patents | 589 |
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 | 62 |
| 2016 | 55 |
| 2017 | 62 |
| 2018 | 61 |
| 2019 | 48 |
| 2020 | 63 |
| 2021 | 69 |
| 2022 | 61 |
| 2023 | 39 |
| 2024 | 31 |
| 2025 | 26 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Anti-microbial air filter
US-2015367270-A1 · Dec 24, 2015 · US
Ceramic honeycomb structure and its production method
US-2015360162-A1 · Dec 17, 2015 · US
Honeycomb structure comprising a cement skin composition with crystalline inorganic fibrous material
US-2015344375-A1 · Dec 3, 2015 · US
Honeycomb structure comprising an outer cement skin and a cement therefor
US-2015337701-A1 · Nov 26, 2015 · US
Use of a filter element for the adsorption of hydrocarbons
US-2015328962-A1 · Nov 19, 2015 · US
Honeycomb structure, manufacturing method thereof, and catalyst carrying honeycomb structure
US-9174880-B2 · Nov 3, 2015 · US
Cement to make thermal shock resistant ceramic honeycomb structures and method to make them
US-9174158-B2 · Nov 3, 2015 · US
Substrate with surface-collection-layer and catalyst-carrying substrate with surface-collection-layer
US-9175587-B2 · Nov 3, 2015 · US
Fine particle collecting filter
US-9168478-B2 · Oct 27, 2015 · US
Exhaust gas purification filter
US-2015298058-A1 · Oct 22, 2015 · US
Shaped articles and method for making the same
US-2015299054-A1 · Oct 22, 2015 · US
Fine particle collecting filter
US-9163538-B2 · Oct 20, 2015 · US
Honeycomb structure
US-2015266779-A1 · Sep 24, 2015 · US
Honeycomb structure comprising a cement skin composition with crystalline inorganic fibrous material
US-9139479-B2 · Sep 22, 2015 · US
Plugged honeycomb structure
US-2015260065-A1 · Sep 17, 2015 · US
Honeycomb structure
US-2015259254-A1 · Sep 17, 2015 · US
Plugged honeycomb structure
US-2015258483-A1 · Sep 17, 2015 · US
Plugged honeycomb structure and manufacturing method of the same
US-2015260067-A1 · Sep 17, 2015 · US
Plugged honeycomb structure
US-2015258485-A1 · Sep 17, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/2429?
- CPC B01D46/2429 is the Cooperative Patent Classification code for “of the honeycomb walls or cells.”
- How many patents are filed under CPC B01D46/2429 (of the honeycomb walls or cells)?
- Our database includes 589 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/2429 growing?
- Publication counts under this code: 31 in 2024 vs 26 in 2025 (latest complete years).