Use of cellulase to improve viscosity control of kraft dissolving pulp
US-2025314012-A1 · Oct 9, 2025 · US
Continuous processes
Continuous processes · 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 | D21C3/24 |
| Official title | Continuous processes |
| Display label | Continuous processes |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 7 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus for processing fibrous materials
US-2025290251-A1 · Sep 18, 2025 · US
Arrangement for installation of monitoring sensors of a treatment vessel for lignocellulosic material
US-2025012009-A1 · Jan 9, 2025 · US
Arrangement for installation of monitoring sensors of a treatment vessel for lignocellulosic material
US-12129598-B2 · Oct 29, 2024 · US
Predictive control system and method for brown washing treatment in pulp mills
US-12077911-B2 · Sep 3, 2024 · US
Method of feeding wood chips to a prehydrolysis reactor
US-11993895-B2 · May 28, 2024 · US
Method of transforming high consistency pulp fibers into pre-dispersed semi-dry and dry fibrous materials
US-11834785-B2 · Dec 5, 2023 · US
Apparatus and process for treating biomass for on-site production of cellulolytic enzymes and method of using the enzymes to manufacture fuels and chemicals
US-11542532-B2 · Jan 3, 2023 · US
Method of producing chemical pulp
US-11473241-B2 · Oct 18, 2022 · US
Apparatus and process for treating biomass for on-site production of cellulolytic enzymes and method of using the enzymes to manufacture fuels and chemicals
US-2022298531-A1 · Sep 22, 2022 · US
Outlet system for transporting comminuted lignocellulosic material from a vessel and vessel comprising such an outlet system
US-11371185-B2 · Jun 28, 2022 · US
An arrangement for installation of monitoring sensors of a treatment vessel for lignocellulosic material
US-2022018067-A1 · Jan 20, 2022 · US
Method of feeding wood chips to a prehydrolysis reactor
US-2022002944-A1 · Jan 6, 2022 · US
Outlet system for transporting comminuted lignocellulosic material from a vessel and vessel comprising such an outlet system
US-2021309449-A1 · Oct 7, 2021 · US
Method of transforming high consistency pulp fibers into pre-dispersed semi-dry and dry fibrous materials
US-2021285156-A1 · Sep 16, 2021 · US
Predictive control system and method for brown washing treatment in pulp mills
US-2021148047-A1 · May 20, 2021 · US
Method for generation of clean steam in a continous digester system
US-10815617-B2 · Oct 27, 2020 · US
Method of producing chemical pulp
US-2020181838-A1 · Jun 11, 2020 · US
Use of Cellulase to improve Viscosity Control of Dissolving Pulp
US-2019257031-A1 · Aug 22, 2019 · US
Method for generation of clean steam in a continous digester system
US-2019218712-A1 · Jul 18, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C3/24?
- CPC D21C3/24 is the Cooperative Patent Classification code for “Continuous processes.”
- How many patents are filed under CPC D21C3/24 (Continuous processes)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC D21C3/24 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).