Recycling of polymer membranes comprising metal-containing catalyst material
US-2025369141-A1 · Dec 4, 2025 · US
from spent catalysts
from spent catalysts · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C22B11/048 |
| Official title | {from spent catalysts} |
| Display label | from spent catalysts |
| Total patents | 65 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 7 |
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 8 |
| 2025 | 11 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel cell stack and membrane electrode assembly disassembly for component separation and recycling
US-2025357501-A1 · Nov 20, 2025 · US
Method of recovering iridium
US-12467117-B2 · Nov 11, 2025 · US
Recycling of catalyst coated membrane components
US-2025260038-A1 · Aug 14, 2025 · US
Method of recovering catalyst material from a membrane electrode assembly from water electrolysis
US-2025256311-A1 · Aug 14, 2025 · US
AN ELECTROCHEMICAL PROCESS FOR RECOVERING PLATINUM GROUP METALS (PGMs) FROM SOLID RESIDUES
US-2025188635-A1 · Jun 12, 2025 · US
Method for comminuting spent, catalyst-coated polymer electrolyte membranes
US-2025183328-A1 · Jun 5, 2025 · US
Processes for recovering rhodium from hydroformylation processes
US-2025137091-A1 · May 1, 2025 · US
Method for catalyst recovery from catalyst-coated membranes
US-2025059620-A1 · Feb 20, 2025 · US
Method for preparing modified platinum-based catalyst for fuel cell by regeneration of platinum-rhenium spent catalyst, catalysts and hydrogen fuel cell
US-2024413353-A1 · Dec 12, 2024 · US
Selective separation of hexachloroplatinate(iv) dianions based on exo-binding with cucurbit[6]uril
US-2024262853-A1 · Aug 8, 2024 · US
Methods of selectively recovering palladium from a palladium-containing material
US-12012642-B2 · Jun 18, 2024 · US
Platinum-group metal recovery agent and platinum-group metal recovery method
US-2024167120-A1 · May 23, 2024 · US
Method for leaching platinum group metals from spent catalyst by UV-vis
US-11952642-B2 · Apr 9, 2024 · US
Method for leaching platinum group metals from spent catalyst by uv-vis
US-2024084420-A1 · Mar 14, 2024 · US
Apparatus for platinum group metals recovery from spent catalysts
US-11898220-B2 · Feb 13, 2024 · US
Method for producing a catalyst comprising at least one group vib metal, at least one group viiib metal and a carrier based on oxide(s)
US-2024009655-A1 · Jan 11, 2024 · US
Method for recovering noble metal from heterogeneous catalysts containing noble metal
US-2023407503-A1 · Dec 21, 2023 · US
Syngas production and recovery of active phase metals from gasifier slag containing spent catalyst
US-11732204-B2 · Aug 22, 2023 · US
Method for recycling hydrogen fuel cell of new energy vehicle
US-11699796-B1 · Jul 11, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B11/048?
- CPC C22B11/048 is the Cooperative Patent Classification code for “from spent catalysts.”
- How many patents are filed under CPC C22B11/048 (from spent catalysts)?
- Our database includes 65 publications tagged with this CPC code.
- Is patent activity under CPC C22B11/048 growing?
- Publication counts under this code: 8 in 2024 vs 11 in 2025 (latest complete years).