Method of removing volatile compounds from a lignin-containing material, use of a distillation method, and a lignin-containing material
US-12479876-B2 · Nov 25, 2025 · US
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Deodorisation {; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams (oxidation of liquors D21C11/0057; post-combustion of gases D21C11/127)}
Deodorisation {; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams (oxidation of liquors D21C11/0057; post-combustion of gases D21C11/127)} · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D21C11/08 |
| Official title | Deodorisation {; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams (oxidation of liquors D21C11/0057; post-combustion of gases D21C11/127)} |
| Display label | Deodorisation {; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams (oxidation of liquors D21C11/0057; post-combustion of gases D21C11/127)} |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2018 | 1 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for removing ammonia from non-condensable gases of a pulp mill
US-12195917-B2 · Jan 14, 2025 · US
Systems and techniques for controlling odor emissions from pulp mills
US-2024384467-A1 · Nov 21, 2024 · US
Method and a system for obtaining methanol from foul condensate of a pulping process
US-11898309-B2 · Feb 13, 2024 · US
A method for removing ammonia from non-condensable gases of a pulp mill
US-2023183920-A1 · Jun 15, 2023 · US
Method and a system for adjusting S/Na-balance of a pulp mill
US-11634864-B2 · Apr 25, 2023 · US
Method and a system for adjusting S/Na-balance of a pulp mill
US-11619000-B2 · Apr 4, 2023 · US
Odor control pulp composition
US-11613849-B2 · Mar 28, 2023 · US
A method of removing volatile compounds from a lignin-containing material, use of a distillation method, and a lignin-containing material
US-2023023359-A1 · Jan 26, 2023 · US
Odor control pulp composition
US-2023009849-A1 · Jan 12, 2023 · US
Method and apparatus for burning odor gas
US-11486090-B2 · Nov 1, 2022 · US
Method of producing chemical pulp
US-11473241-B2 · Oct 18, 2022 · US
Odor control pulp composition
US-11332886-B2 · May 17, 2022 · US
Method and apparatus for burning odor gas
US-2021180250-A1 · Jun 17, 2021 · US
A method and a system for obtaining methanol from foul condensate of a pulping process
US-2021087745-A1 · Mar 25, 2021 · US
Odor control pulp composition
US-2020385928-A1 · Dec 10, 2020 · US
A method and a system for adjusting s/na -balance of a pulp mill
US-2020385925-A1 · Dec 10, 2020 · US
A method and a system for adjusting s/na -balance of a pulp mill
US-2020291574-A1 · Sep 17, 2020 · US
Method of controlling the chemical balance of a pulp mill
US-2020283954-A1 · Sep 10, 2020 · US
Method of producing chemical pulp
US-2020181838-A1 · Jun 11, 2020 · US