Selective catalytic reduction filter devices having NOx storage capabilities
US-10138779-B2 · Nov 27, 2018 · US
Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start · 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 | B01D53/9481 |
| Official title | {Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start} |
| Display label | Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start |
| Total patents | 157 |
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 | 13 |
| 2017 | 23 |
| 2018 | 12 |
| 2019 | 20 |
| 2020 | 24 |
| 2021 | 15 |
| 2022 | 12 |
| 2023 | 8 |
| 2024 | 9 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compositions for passive NOx adsorption (PNA) systems and methods of making and using same
US-10086356-B2 · Oct 2, 2018 · US
Diesel particulate filter coated with selective catalytic reduction and exhaust gas aftertreatment system including the same
US-10060315-B2 · Aug 28, 2018 · US
Passive NOx adsorber
US-10005075-B2 · Jun 26, 2018 · US
Catalyzed soot filter for use in passive selective catalytic reduction
US-2018163596-A1 · Jun 14, 2018 · US
Mn+-exchanged beta zeolite, gas adsorbent comprising same, method for producing same, and method for removing nitrogen monoxide
US-9968909-B2 · May 15, 2018 · US
Exhaust System
US-2017314438-A1 · Nov 2, 2017 · US
Small pore molecular sieve supported copper catalysts durable against lean/rich aging for the reduction of nitrogen oxides
US-9802156-B2 · Oct 31, 2017 · US
Exhaust-gas aftertreatment device for an internal combustion engine, and method for heating an exhaust-gas aftertreatment device
US-9797284-B2 · Oct 24, 2017 · US
IN-EXHAUST ELECTRICAL ELEMENT FOR NOx STORAGE CATALYST AND SCR SYSTEMS
US-2017284250-A1 · Oct 5, 2017 · US
After-Treatment System
US-2017276053-A1 · Sep 28, 2017 · US
Exhaust System
US-2017211455-A1 · Jul 27, 2017 · US
Method of operating an aftertreatment system of an internal combustion engine
US-2017167346-A1 · Jun 15, 2017 · US
Diesel Oxidation Catalyst Having a Capture Region for Exhaust Gas Impurities
US-2017151532-A1 · Jun 1, 2017 · US
Fe(II)-substituted beta-type zeolite, production method therefor and gas adsorbent including same, and nitric oxide and hydrocarbon removal method
US-9656238-B2 · May 23, 2017 · US
Emissions reduction system
US-9657626-B2 · May 23, 2017 · US
Cold Start Catalyst and Its Use in Exhaust Systems
US-2017128922-A1 · May 11, 2017 · US
Diesel particulate filter coated with selective catalytic reduction and exhaust gas aftertreatment system including the same
US-2017122158-A1 · May 4, 2017 · US
Catalyst for purification of exhaust gas, NOx storage-reduction catalyst, and method for purifying exhaust gas
US-9616386-B2 · Apr 11, 2017 · US
PASSIVE NOx ADSORBER
US-2017096923-A1 · Apr 6, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D53/9481?
- CPC B01D53/9481 is the Cooperative Patent Classification code for “Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start.”
- How many patents are filed under CPC B01D53/9481 (Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start)?
- Our database includes 157 publications tagged with this CPC code.
- Is patent activity under CPC B01D53/9481 growing?
- Publication counts under this code: 9 in 2024 vs 2 in 2025 (latest complete years).