Catalyst system and process for the production of glycols
US-10369550-B2 · Aug 6, 2019 · US
Platinum group metals
Platinum group 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 | B01J23/56 |
| Official title | Platinum group metals |
| Display label | Platinum group metals |
| Total patents | 149 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 10 |
| 2017 | 12 |
| 2018 | 19 |
| 2019 | 19 |
| 2020 | 20 |
| 2021 | 14 |
| 2022 | 12 |
| 2023 | 9 |
| 2024 | 7 |
| 2025 | 7 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Core/shell catalyst particles and method of manufacture
US-2019160427-A1 · May 30, 2019 · US
Catalyst system and process for the production of glycols
US-2018339287-A1 · Nov 29, 2018 · US
THREE LAYER NOx ADSORBER CATALYST
US-2018311647-A1 · Nov 1, 2018 · US
Porous member and catalyst member
US-10105683-B2 · Oct 23, 2018 · US
Exhaust gas purifying catalyst
US-2018258810-A1 · Sep 13, 2018 · US
Exhaust gas purification catalyst
US-2018243690-A1 · Aug 30, 2018 · US
Process for producing btx from a c5-c12 hydrocarbon mixture
US-2018230073-A1 · Aug 16, 2018 · US
Catalyst having a helical outer shape, improving hydrodynamics in reactors
US-10005079-B2 · Jun 26, 2018 · US
Use Of An Anode Catalyst Layer
US-2018145338-A1 · May 24, 2018 · US
Process for producing methyl methacrylate
US-9963417-B2 · May 8, 2018 · US
Catalytic wall-flow filter with partial surface coating
US-2018119589-A1 · May 3, 2018 · US
Exhaust gas purification catalyst
US-2018106174-A1 · Apr 19, 2018 · US
Exhaust gas purification catalyst
US-2018106175-A1 · Apr 19, 2018 · US
Use of an anode catalyst layer
US-9947939-B2 · Apr 17, 2018 · US
Carbon monoxide-tolerant anode catalyst layer and methods of use thereof in proton exchange membrane fuel cells
US-9947938-B2 · Apr 17, 2018 · US
Synthesis gas manufacturing method and synthesis gas manufacturing apparatus
US-2018093886-A1 · Apr 5, 2018 · US
Emissions treatment systems with TWC catalysts and SCR-HCT catalysts
US-9931596-B2 · Apr 3, 2018 · US
Oxidation catalyst for a diesel engine exhaust
US-2018056278-A1 · Mar 1, 2018 · US
Catalyst for the first hydrodemetalization step in a hydroprocessing system with multiple reactors for the improvement of heavy and extra heavy crudes
US-9901908-B2 · Feb 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J23/56?
- CPC B01J23/56 is the Cooperative Patent Classification code for “Platinum group metals.”
- How many patents are filed under CPC B01J23/56 (Platinum group metals)?
- Our database includes 149 publications tagged with this CPC code.
- Is patent activity under CPC B01J23/56 growing?
- Publication counts under this code: 7 in 2024 vs 7 in 2025 (latest complete years).