Method of purifying raw methanol
US-12503417-B2 · Dec 23, 2025 · US
of residues of the fabrication of wood-cellulose (in particular tall-oil)
of residues of the fabrication of wood-cellulose (in particular tall-oil) · 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 | C11B13/005 |
| Official title | {of residues of the fabrication of wood-cellulose (in particular tall-oil)} |
| Display label | of residues of the fabrication of wood-cellulose (in particular tall-oil) |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 1 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Removal of impurities from tall oil feed by solvent precipitation
US-2025368920-A1 · Dec 4, 2025 · US
Process and system for contaminants removal
US-2025281853-A1 · Sep 11, 2025 · US
Heat treatment with adsorption purification of organic material of biological origin
US-2025101322-A1 · Mar 27, 2025 · US
Process and system for contaminants removal
US-12128330-B2 · Oct 29, 2024 · US
Fractionation of crude tall oil
US-2024252954-A1 · Aug 1, 2024 · US
Process for refining crude tall oil
US-11987768-B2 · May 21, 2024 · US
Process for refining crude tall oil
US-2023407203-A1 · Dec 21, 2023 · US
A method of purifying raw methanol
US-2023265031-A1 · Aug 24, 2023 · US
Process and apparatus for treating tall oil
US-2023183601-A1 · Jun 15, 2023 · US
Process and system for contaminants removal
US-2023088299-A1 · Mar 23, 2023 · US
Process and apparatus for treating tall oil
US-11578234-B2 · Feb 14, 2023 · US
Fractionation of crude tall oil
US-2022018069-A1 · Jan 20, 2022 · US
Desulfurized Crude Tall Oil Compositions and Processes for Producing
US-2021363464-A1 · Nov 25, 2021 · US
Process for purifying renewable feedstock comprising fatty acids
US-11053452-B2 · Jul 6, 2021 · US
Desulfurized tall oil and derivatives thereof
US-11041095-B2 · Jun 22, 2021 · US
Desulfurized black liquor soap compositions and processes for producing
US-11034914-B2 · Jun 15, 2021 · US
Process for purifying feedstock comprising fatty acids
US-10947478-B2 · Mar 16, 2021 · US
Process and apparatus for treating tall oil
US-2021009858-A1 · Jan 14, 2021 · US
Fractionation of biomass-based material
US-10876071-B2 · Dec 29, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C11B13/005?
- CPC C11B13/005 is the Cooperative Patent Classification code for “of residues of the fabrication of wood-cellulose (in particular tall-oil).”
- How many patents are filed under CPC C11B13/005 (of residues of the fabrication of wood-cellulose (in particular tall-oil))?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC C11B13/005 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).