Manufacturing method for recycled carbon material
US-2026038902-A1 · Feb 5, 2026 · US
Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite
Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite · 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 | C01B32/215 |
| Official title | Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite |
| Display label | Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite |
| Total patents | 38 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for converting a solid carbon source to graphite
US-2026035248-A1 · Feb 5, 2026 · US
Process for the recovery and purification of graphite from spent batteries
US-2025391941-A1 · Dec 25, 2025 · US
Process and reactor for removing impurities from carbon material
US-2025271584-A1 · Aug 28, 2025 · US
Artificial graphite, method for preparing artificial graphite, anode comprising same, and lithium secondary battery
US-12401020-B2 · Aug 26, 2025 · US
Lithium recovery via charging of lithium-ion batteries
US-12374733-B2 · Jul 29, 2025 · US
Reproduction method for negative electrode active material
US-2025019244-A1 · Jan 16, 2025 · US
Method for recovering waste lithium cobalt oxide battery
US-12183900-B2 · Dec 31, 2024 · US
Method for recovering waste lithium cobalt oxide battery
US-2024274913-A1 · Aug 15, 2024 · US
Purification apparatus and method of purifying hot zone parts
US-12006589-B2 · Jun 11, 2024 · US
Lithium ion battery recycling process utilizing magnetic separation of electrode materials
US-2024047775-A1 · Feb 8, 2024 · US
Direct Regeneration of Spent Graphite Anode of Lithium-ion Battery
US-2024006676-A1 · Jan 4, 2024 · US
Porous carbon materials, nanoparticles, methods of making same, and uses thereof
US-2023271840-A1 · Aug 31, 2023 · US
Method for recycling spent carbon cathode of aluminum electrolysis
US-11697594-B2 · Jul 11, 2023 · US
Method for recycling spent carbon cathode of aluminum electrolysis
US-2023120820-A1 · Apr 20, 2023 · US
Artificial graphite, method for preparing artificial graphite, anode comprising same, and lithium secondary battery
US-2022393150-A1 · Dec 8, 2022 · US
Process for purifying graphitic material
US-2022281750-A1 · Sep 8, 2022 · US
Purification apparatus and method of purifying hot zone parts
US-2022267923-A1 · Aug 25, 2022 · US
Concentrating graphite particles by agglomeration with hydrophobic magnetic particles
US-11420874-B2 · Aug 23, 2022 · US
Methods of treating graphitic materials and of preparing colloidal solutions including graphitic materials
US-11254577-B2 · Feb 22, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B32/215?
- CPC C01B32/215 is the Cooperative Patent Classification code for “Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite.”
- How many patents are filed under CPC C01B32/215 (Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite)?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC C01B32/215 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).