Methods and devices for controlling steam introduction in a kiln
US-2025320996-A1 · Oct 16, 2025 · US
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Apparatus for the preparation thereof
Apparatus for the preparation thereof · 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 | C01B32/39 |
| Official title | Apparatus for the preparation thereof |
| Display label | Apparatus for the preparation thereof |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Biogenic activated carbon and methods of making and using same
US-12151226-B2 · Nov 26, 2024 · US
Biogenic activated carbon and methods of making and using same
US-2024139707-A1 · May 2, 2024 · US
Biogenic activated carbon and methods of making and using same
US-2024082813-A1 · Mar 14, 2024 · US
Petroleum coke treatment apparatus, process, and treatment system
US-2024059568-A1 · Feb 22, 2024 · US
Production of carbon fiber from asphaltenes
US-2023357026-A1 · Nov 9, 2023 · US
Production of carbon fiber from asphaltenes
US-11731878-B2 · Aug 22, 2023 · US
Method for producing activated carbon and activated carbon obtained in this way and use thereof
US-11655155-B2 · May 23, 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
Carbon micro-plant
US-11358119-B2 · Jun 14, 2022 · US
Biogenic activated carbon and methods of making and using same
US-11285454-B2 · Mar 29, 2022 · US
Carbon micro-plant
US-2021016244-A1 · Jan 21, 2021 · US
Biogenic activated carbon and methods of making and using same
US-2021009427-A1 · Jan 14, 2021 · US
Systems and Methods of Regenerating Activated Carbon
US-2020306726-A1 · Oct 1, 2020 · US
Biogenic activated carbon and methods of making and using same
US-2020055736-A1 · Feb 20, 2020 · US
Method for producing activated carbon and activated carbon obtained in this way and use thereof
US-2019177170-A1 · Jun 13, 2019 · US
Carbon micro-plant
US-2017333868-A1 · Nov 23, 2017 · US
Burner pipe and rotary kiln for producing activated carbon
US-9746242-B2 · Aug 29, 2017 · US
Carbon micro-plant
US-9724667-B2 · Aug 8, 2017 · US