Oxidation Catalyst for a Compression Ignition Engine
US-2015360213-A1 · Dec 17, 2015 · US
Beta zeolites
Beta zeolites · 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 | B01D2255/502 |
| Official title | Beta zeolites |
| Display label | Beta zeolites |
| Total patents | 363 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 61 |
| 2016 | 44 |
| 2017 | 40 |
| 2018 | 43 |
| 2019 | 47 |
| 2020 | 41 |
| 2021 | 26 |
| 2022 | 17 |
| 2023 | 18 |
| 2024 | 10 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Non-pgm ammonia slip catalyst
US-2015352492-A1 · Dec 10, 2015 · US
Catalyst composition and method for use in selective catalytic reduction of nitrogen oxides
US-9168517-B2 · Oct 27, 2015 · US
Catalysed Soot Filter for Treating the Exhaust Gas of a Compression Ignition Engine
US-2015298059-A1 · Oct 22, 2015 · US
Exhaust gas purification device for diesel engine
US-2015275734-A1 · Oct 1, 2015 · US
DIESEL OXIDATION CATALYST WITH NOx ADSORBER ACTIVITY
US-2015273452-A1 · Oct 1, 2015 · US
CATALYST SYSTEM FOR TREATING NOx- AND PARTICLE-CONTAINING DIESEL EXHAUST GAS
US-2015273394-A1 · Oct 1, 2015 · US
Catalyzed SCR filter and emission treatment system
US-9144795-B2 · Sep 29, 2015 · US
Extruded honeycomb catalyst
US-9138731-B2 · Sep 22, 2015 · US
Highly hydrothermal-resistant SCR catalyst and manufacturing method therefor
US-9138685-B2 · Sep 22, 2015 · US
Zoned catalysed substrate monolith
US-2015252708-A1 · Sep 10, 2015 · US
Scr catalysts having improved low temperature performance, and methods of making and using the same
US-2015246346-A1 · Sep 3, 2015 · US
Scr catalysts having improved low temperature performance, and methods of making and using the same
US-2015246345-A1 · Sep 3, 2015 · US
Surface-coated zeolite materials for diesel oxidation applications
US-9120077-B2 · Sep 1, 2015 · US
Catalyzed SCR filter and emission treatment system
US-9121327-B2 · Sep 1, 2015 · US
Exhaust system having n2o catalyst in egr circuit
US-2015240752-A1 · Aug 27, 2015 · US
Method For Purifying Exhaust Gas And For Regenerating An Oxidation Catalyst
US-2015231563-A1 · Aug 20, 2015 · US
Oxidation Catalyst for Treating the Exhaust Gas of a Compression Ignition Engine
US-2015224478-A1 · Aug 13, 2015 · US
ZEOLITE PROMOTED V/TiW CATALYSTS
US-2015224486-A1 · Aug 13, 2015 · US
Diesel oxidation catalyst and exhaust system
US-2015202600-A1 · Jul 23, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2255/502?
- CPC B01D2255/502 is the Cooperative Patent Classification code for “Beta zeolites.”
- How many patents are filed under CPC B01D2255/502 (Beta zeolites)?
- Our database includes 363 publications tagged with this CPC code.
- Is patent activity under CPC B01D2255/502 growing?
- Publication counts under this code: 10 in 2024 vs 12 in 2025 (latest complete years).