Apparatus for purifying exhaust gas
US-2017362978-A1 · Dec 21, 2017 · US
Catalyst supported on particulate filters
Catalyst supported on particulate filters · 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 | B01D2255/915 |
| Official title | Catalyst supported on particulate filters |
| Display label | Catalyst supported on particulate filters |
| Total patents | 329 |
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 | 18 |
| 2016 | 30 |
| 2017 | 50 |
| 2018 | 58 |
| 2019 | 39 |
| 2020 | 37 |
| 2021 | 33 |
| 2022 | 18 |
| 2023 | 11 |
| 2024 | 19 |
| 2025 | 13 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Exhaust gas post-processing system
US-9828895-B2 · Nov 28, 2017 · US
NOx ADSORBER CATALYST
US-2017320046-A1 · Nov 9, 2017 · US
Catalyzed filtration media with high surface area material and method for making the same
US-2017320013-A1 · Nov 9, 2017 · US
Supported catalyst particles for oxidizing carbon monoxide
US-9801410-B2 · Oct 31, 2017 · US
Heater and honeycomb structure including heater
US-2017276047-A1 · Sep 28, 2017 · US
Honeycomb structure
US-2017274366-A1 · Sep 28, 2017 · US
Honeycomb structure
US-2017232429-A1 · Aug 17, 2017 · US
PASSIVE NOx ADSORBER
US-2017095805-A1 · Apr 6, 2017 · US
Gasoline engine with an exhaust system for combusting particulate matter
US-2017080388-A1 · Mar 23, 2017 · US
Porous catalyst washcoats
US-9561495-B2 · Feb 7, 2017 · US
Method and system for the purification of exhaust gas from an internal combustion engine
US-9561468-B2 · Feb 7, 2017 · US
Composition for improved manufacture of substrates
US-2016376200-A1 · Dec 29, 2016 · US
Non-PGM catalyst for burning carbon soot, and filtration filter and exhaust gas post-processing apparatus using the same
US-9527032-B2 · Dec 27, 2016 · US
Oxidation catalyst for treating the exhaust gas of a compression ignition engine
US-9527034-B2 · Dec 27, 2016 · US
Catalysed soot filter for treating the exhaust gas of a compression ignition engine
US-9527035-B2 · Dec 27, 2016 · US
Ammonia slip catalyst designed to be first in an scr system
US-2016367973-A1 · Dec 22, 2016 · US
Exhaust System Without a DOC Having an ASC Acting as a DOC in a System with an SCR Catalyst Before the ASC
US-2016367974-A1 · Dec 22, 2016 · US
System for the purification of exhaust gas from an internal combustion engine
US-2016354724-A1 · Dec 8, 2016 · US
Method of Controlling a Multi Selective Catalytic Reduction System
US-2016346732-A1 · Dec 1, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2255/915?
- CPC B01D2255/915 is the Cooperative Patent Classification code for “Catalyst supported on particulate filters.”
- How many patents are filed under CPC B01D2255/915 (Catalyst supported on particulate filters)?
- Our database includes 329 publications tagged with this CPC code.
- Is patent activity under CPC B01D2255/915 growing?
- Publication counts under this code: 19 in 2024 vs 13 in 2025 (latest complete years).