Composite oxygen transport membrane
US-9486735-B2 · Nov 8, 2016 · US
Mixed oxides
Mixed oxides · 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 | B01D2255/40 |
| Official title | Mixed oxides |
| Display label | Mixed oxides |
| Total patents | 373 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 48 |
| 2016 | 47 |
| 2017 | 50 |
| 2018 | 42 |
| 2019 | 33 |
| 2020 | 37 |
| 2021 | 26 |
| 2022 | 32 |
| 2023 | 20 |
| 2024 | 20 |
| 2025 | 15 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermally stable compositions of OSM free of rare earth metals
US-9486784-B2 · Nov 8, 2016 · US
Rhodium-iron catalysts
US-9475004-B2 · Oct 25, 2016 · US
Zero PGM catalyst including Cu—Co—Mn ternary spinel for TWC applications
US-9468912-B2 · Oct 18, 2016 · US
Mixed metal oxide catalyst
US-2016214060-A1 · Jul 28, 2016 · US
Exhaust gas purification system and method for purifying exhaust gas
US-9394820-B2 · Jul 19, 2016 · US
Carbon-dioxide capturing material, and carbon-dioxide recovery apparatus using same
US-2016199808-A1 · Jul 14, 2016 · US
Catalyzed particulate filter
US-9381497-B2 · Jul 5, 2016 · US
Diesel oxidation catalyst
US-9370769-B2 · Jun 21, 2016 · US
Bimetallic Synergized PGM Catalyst Systems for TWC Application
US-2016136621-A1 · May 19, 2016 · US
Exhaust gas purifying catalyst and method for producing same
US-9314775-B2 · Apr 19, 2016 · US
Zoned Catalyst for Treating Exhaust Gas
US-2016045868-A1 · Feb 18, 2016 · US
Particulate matter purifying material, filter catalyst for purifying particulate matter using particulate matter purifying material, and method of regenerating filter catalyst for purifying particulate matter
US-9222382-B2 · Dec 29, 2015 · US
Molecular Sieve Catalyst Compositions, Catalyst Composites, Systems, And Methods
US-2015367336-A1 · Dec 24, 2015 · US
Molecular Sieve Catalyst Compositions, Catalytic Composites, Systems, And Methods
US-2015367337-A1 · Dec 24, 2015 · US
Base Metal Activated Rhodium Coatings for Catalysts in Three-Way Catalyst (TWC) Applications
US-2015352533-A1 · Dec 10, 2015 · US
Catalytic Articles Containing Platinum Group Metals And Non-Platinum Group Metals And Methods Of Making And Using Same
US-2015352493-A1 · Dec 10, 2015 · US
Rhodium-Iron Catalysts
US-2015352531-A1 · Dec 10, 2015 · US
Catalyst and method for the reduction of nitrogen oxides
US-2015352495-A1 · Dec 10, 2015 · US
Three-way Catalyst Systems Including Nb-Zr-Al-Mixed Oxide Supports, Ba-Pd, and Rh-Fe Material Compositions
US-2015352494-A1 · Dec 10, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2255/40?
- CPC B01D2255/40 is the Cooperative Patent Classification code for “Mixed oxides.”
- How many patents are filed under CPC B01D2255/40 (Mixed oxides)?
- Our database includes 373 publications tagged with this CPC code.
- Is patent activity under CPC B01D2255/40 growing?
- Publication counts under this code: 20 in 2024 vs 15 in 2025 (latest complete years).