Method for making activated carbon material for supercapacitor
US-2026042674-A1 · Feb 12, 2026 · US
from distillation residues of coal or petroleum; from petroleum acid sludge
from distillation residues of coal or petroleum; from petroleum acid sludge · 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 | C01B32/33 |
| Official title | from distillation residues of coal or petroleum; from petroleum acid sludge |
| Display label | from distillation residues of coal or petroleum; from petroleum acid sludge |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 7 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Catalytic cracking method of pvc waste
US-2026035617-A1 · Feb 5, 2026 · US
Recarburizer and method of producing same
US-2025313909-A1 · Oct 9, 2025 · US
Silicon-carbon composites containing carbon derived from methane pyrolysis and use thereof
US-2025011175-A1 · Jan 9, 2025 · US
Electrode for electrochemical devices, and electrochemical device
US-12051542-B2 · Jul 30, 2024 · US
Petroleum coke treatment apparatus, process, and treatment system
US-2024059568-A1 · Feb 22, 2024 · US
Processes and compositions for carbon foam materials
US-11858818-B2 · Jan 2, 2024 · US
Production of carbon fiber from asphaltenes
US-2023357026-A1 · Nov 9, 2023 · US
Sulfur-doped porous carbon derived from heavy hydrocarbons and methods for production thereof
US-11746020-B2 · Sep 5, 2023 · US
Production of carbon fiber from asphaltenes
US-11731878-B2 · Aug 22, 2023 · US
Electrode for electrochemical devices, and electrochemical device
US-2023197360-A1 · Jun 22, 2023 · US
Activated Carbon and Method of Fabrication Thereof
US-2023149893-A1 · May 18, 2023 · US
Method for producing anode grade coke from crude oils
US-2023101524-A1 · Mar 30, 2023 · US
Production of carbon fiber from asphaltenes
US-2023020290-A1 · Jan 19, 2023 · US
Bio-oil light fraction-based bread-shaped porous activated carbon, method for preparing the same and use thereof
US-2022259049-A1 · Aug 18, 2022 · US
Processes and compositions for carbon foam materials
US-2021122640-A1 · Apr 29, 2021 · US
Process for producing adsorbent including activated carbon
US-10857515-B2 · Dec 8, 2020 · US
Method for manufacturing activated carbon
US-10815127-B2 · Oct 27, 2020 · US
Sulfur-doped porous carbon derived from heavy hydrocarbons and methods for production thereof
US-2020299141-A1 · Sep 24, 2020 · US
Magnetic field enhanced plasma for materials processing
US-2019366298-A1 · Dec 5, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B32/33?
- CPC C01B32/33 is the Cooperative Patent Classification code for “from distillation residues of coal or petroleum; from petroleum acid sludge.”
- How many patents are filed under CPC C01B32/33 (from distillation residues of coal or petroleum; from petroleum acid sludge)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC C01B32/33 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).