Exhaust gas purifying catalyst
US-9833771-B2 · Dec 5, 2017 · US
Catalysts not containing noble metals
Catalysts not containing noble metals · 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 | B01D2255/65 |
| Official title | Catalysts not containing noble metals |
| Display label | Catalysts not containing noble metals |
| Total patents | 113 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 24 |
| 2017 | 18 |
| 2018 | 6 |
| 2019 | 9 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 9 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Application of synergized-pgm with ultra-low pgm loadings as close-coupled three-way catalysts for internal combustion engines
US-2017328250-A1 · Nov 16, 2017 · US
Oxygen storage capacity of non-copper spinel oxide materials for twc applications
US-2017326533-A1 · Nov 16, 2017 · US
Methods and materials for direct nox decomposition in lean exhaust gases
US-2017312742-A1 · Nov 2, 2017 · US
Process for producing a catalyst and catalyst article
US-2017239619-A1 · Aug 24, 2017 · US
Thermal stability of copper-manganese spinel as Zero PGM catalyst for TWC application
US-9731279-B2 · Aug 15, 2017 · US
Mixing structure
US-9649595-B2 · May 16, 2017 · US
Particulate filter containing a nickel-copper catalyst
US-9630146-B2 · Apr 25, 2017 · US
Base metal catalyst
US-9616384-B2 · Apr 11, 2017 · US
Stability of Doped-Zirconia as Support Oxide for Copper-Manganese Zero-PGM Catalysts
US-2017095802-A1 · Apr 6, 2017 · US
Nickel-Doped Copper-Manganese Spinel as Zero-PGM Catalyst for TWC Applications
US-2017095800-A1 · Apr 6, 2017 · US
Methods and processes of coating zero-PGM catalysts including with Cu, Mn, Fe for TWC applications
US-9610570-B2 · Apr 4, 2017 · US
Combined oxidation and absorption of nox by an ionic liquid tandem process
US-2017036164-A1 · Feb 9, 2017 · US
Optimization of Zero-PGM washcoat and overcoat loadings on metallic substrate
US-9545626-B2 · Jan 17, 2017 · US
Exhaust gas purifying catalyst composition and exhaust gas purifying catalyst
US-9533290-B2 · Jan 3, 2017 · US
Zero-PGM TWC with High Redox Reversibility
US-2016361711-A1 · Dec 15, 2016 · US
Reversibility of Copper-Manganese Binary Spinel Structure under Reduction-Oxidation Conditions
US-2016361710-A1 · Dec 15, 2016 · US
Optimization of washcoat adhesion of zero-PGM catalyst on metallic substrates
US-9517449-B2 · Dec 13, 2016 · US
Firing (calcination) process and method related to metallic substrates coated with ZPGM catalyst
US-9511353-B2 · Dec 6, 2016 · US
Combination of Pseudobrookite Oxide and Low Loading of PGM as High Sulfur-Resistant Catalyst for Diesel Oxidation Applications
US-2016346765-A1 · Dec 1, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2255/65?
- CPC B01D2255/65 is the Cooperative Patent Classification code for “Catalysts not containing noble metals.”
- How many patents are filed under CPC B01D2255/65 (Catalysts not containing noble metals)?
- Our database includes 113 publications tagged with this CPC code.
- Is patent activity under CPC B01D2255/65 growing?
- Publication counts under this code: 2 in 2024 vs 8 in 2025 (latest complete years).