Manufacturing method of honeycomb structure
US-2017282168-A1 · Oct 5, 2017 · US
ZSM 5 zeolites
ZSM 5 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 | B01D2255/504 |
| Official title | ZSM 5 zeolites |
| Display label | ZSM 5 zeolites |
| Total patents | 213 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 30 |
| 2016 | 25 |
| 2017 | 29 |
| 2018 | 37 |
| 2019 | 28 |
| 2020 | 18 |
| 2021 | 12 |
| 2022 | 9 |
| 2023 | 9 |
| 2024 | 8 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Honeycomb structure
US-2017274366-A1 · Sep 28, 2017 · US
Binary catalyst based selective catalytic reduction filter
US-9764287-B2 · Sep 19, 2017 · US
PASSIVE NOx ADSORBER
US-2017096923-A1 · Apr 6, 2017 · US
Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function
US-9533295-B2 · Jan 3, 2017 · US
Catalytic wall-flow filter having a membrane
US-2016375429-A1 · Dec 29, 2016 · US
Transition metal/zeolite scr catalysts
US-2016367939-A1 · Dec 22, 2016 · US
Ammonia slip catalyst with low n2o formation
US-2016367975-A1 · Dec 22, 2016 · US
Diesel particulate filter
US-9517454-B2 · Dec 13, 2016 · US
Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems
US-2016339389-A1 · Nov 24, 2016 · US
Zeolite and redox oxide combined catalyst body
US-9492811-B2 · Nov 15, 2016 · US
On-site regeneration method of denitration catalyst in exhaust gas purification system
US-2016305303-A1 · Oct 20, 2016 · US
Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems
US-9440192-B2 · Sep 13, 2016 · US
Three-way catalyst and its use in exhaust systems
US-2016228818-A1 · Aug 11, 2016 · US
Zeolite-based SCR catalysts and their use in diesel engine emission treatment
US-9403156-B2 · Aug 2, 2016 · US
Method for reducing the concentration of nitrogen dioxide
US-9403124-B2 · Aug 2, 2016 · US
Exhaust-gas purification device and method for the reduction of nitrogen oxides from an exhaust gas of a fossil-fired power plant
US-9387436-B2 · Jul 12, 2016 · US
A Fiber Suitable For Packaging And Storing Plant Produce
US-2016194818-A1 · Jul 7, 2016 · US
Filter for filtering particulate matter from exhaust gas emitted from a compression ignition engine
US-2016193594-A1 · Jul 7, 2016 · US
Catalyst and method of manufacture
US-9375710-B2 · Jun 28, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2255/504?
- CPC B01D2255/504 is the Cooperative Patent Classification code for “ZSM 5 zeolites.”
- How many patents are filed under CPC B01D2255/504 (ZSM 5 zeolites)?
- Our database includes 213 publications tagged with this CPC code.
- Is patent activity under CPC B01D2255/504 growing?
- Publication counts under this code: 8 in 2024 vs 6 in 2025 (latest complete years).