Exhaust gas purifying catalyst
US-9833771-B2 · Dec 5, 2017 · US
characterised by a specific device
characterised by a specific device · 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 | B01D53/9454 |
| Official title | {characterised by a specific device} |
| Display label | characterised by a specific device |
| Total patents | 386 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 29 |
| 2017 | 34 |
| 2018 | 37 |
| 2019 | 39 |
| 2020 | 56 |
| 2021 | 43 |
| 2022 | 46 |
| 2023 | 31 |
| 2024 | 24 |
| 2025 | 19 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heater and honeycomb structure including heater
US-2017276047-A1 · Sep 28, 2017 · US
Exhaust gas catalyst
US-9694354-B2 · Jul 4, 2017 · US
Carrier for exhaust gas purification catalyst and exhaust gas purification catalyst
US-2017144136-A1 · May 25, 2017 · US
Diesel oxidation catalyst and exhaust system
US-9636634-B2 · May 2, 2017 · US
Catalytic wall-flow filter having a membrane
US-2016375429-A1 · Dec 29, 2016 · US
Exhaust system comprising exotherm-generating catalyst
US-9528408-B2 · Dec 27, 2016 · US
Three-way-catalyst system
US-9522360-B2 · Dec 20, 2016 · US
Multi-cell structure for automotive catalyst support
US-9512766-B2 · Dec 6, 2016 · US
Exhaust gas purifying device for internal combustion engine
US-2016348552-A1 · Dec 1, 2016 · US
Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems
US-2016339389-A1 · Nov 24, 2016 · US
Start-up catalyst for use upstream of a gasoline particulate filter
US-9486793-B2 · Nov 8, 2016 · US
Engine system
US-2016319717-A1 · Nov 3, 2016 · US
Rhodium-iron catalysts
US-9475004-B2 · Oct 25, 2016 · US
Three-way catalyst systems including Fe-activated Rh and Ba-Pd material compositions
US-9475005-B2 · Oct 25, 2016 · US
Exhaust gas purifying catalyst
US-2016288099-A1 · Oct 6, 2016 · US
In-line rotor-stator disperser and reaction process
US-2016288098-A1 · Oct 6, 2016 · US
Electrically heated catalyst device and its manufacturing method
US-2016271561-A1 · Sep 22, 2016 · US
Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems
US-9440192-B2 · Sep 13, 2016 · US
Filter substrate comprising three-way catalyst
US-2016243501-A1 · Aug 25, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D53/9454?
- CPC B01D53/9454 is the Cooperative Patent Classification code for “characterised by a specific device.”
- How many patents are filed under CPC B01D53/9454 (characterised by a specific device)?
- Our database includes 386 publications tagged with this CPC code.
- Is patent activity under CPC B01D53/9454 growing?
- Publication counts under this code: 24 in 2024 vs 19 in 2025 (latest complete years).