High yield chemical pulping and bleaching process
US-12435469-B2 · Oct 7, 2025 · US
Separating fibrous materials from waste
Separating fibrous materials from waste · 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 | D21B1/026 |
| Official title | {Separating fibrous materials from waste} |
| Display label | Separating fibrous materials from waste |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for the production of particle board or wood fiber board
US-12325148-B2 · Jun 10, 2025 · US
Process for the production of particle board or wood fiber board
US-2025170746-A1 · May 29, 2025 · US
Fiber body manufacturing apparatus and defibrating device
US-12264437-B2 · Apr 1, 2025 · US
Highly refined pulp from fibers obtained from used beverage cartons
US-2025043512-A1 · Feb 6, 2025 · US
A method for manufacturing a purified fiber fraction from used beverage carton
US-2025012011-A1 · Jan 9, 2025 · US
Process for the production of wood fiberboard
US-2024375313-A1 · Nov 14, 2024 · US
Lignin removal from lignocellulosic waste using rejected brine solution
US-2024368353-A1 · Nov 7, 2024 · US
Process for producing strong and soft tissue and towel products
US-2024060237-A1 · Feb 22, 2024 · US
Process to recover a portion of post-recycling municipal solid waste
US-11898308-B2 · Feb 13, 2024 · US
Process for producing strong and soft tissue and towel products
US-11834787-B2 · Dec 5, 2023 · US
High yield chemical pulping and bleaching process
US-2023265609-A1 · Aug 24, 2023 · US
Fiber body manufacturing apparatus and defibrating device
US-2023220626-A1 · Jul 13, 2023 · US
Separation device and sheet manufacturing apparatus
US-2023220619-A1 · Jul 13, 2023 · US
Method and system for recovering pulp fibers from used absorbent articles
US-11673172-B2 · Jun 13, 2023 · US
Disperser plates with intermeshing teeth and outer refining section
US-11643778-B2 · May 9, 2023 · US
Process for the production of particle board or wood fiber board
US-2023099498-A1 · Mar 30, 2023 · US
Method for dissolving lignocellulosic biomass
US-11492737-B1 · Nov 8, 2022 · US
Separation device
US-11325160-B2 · May 10, 2022 · US
Disperser plates with intermeshing teeth and outer refining section
US-2022034034-A1 · Feb 3, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21B1/026?
- CPC D21B1/026 is the Cooperative Patent Classification code for “Separating fibrous materials from waste.”
- How many patents are filed under CPC D21B1/026 (Separating fibrous materials from waste)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC D21B1/026 growing?
- Publication counts under this code: 4 in 2024 vs 6 in 2025 (latest complete years).