Processes and systems for producing nanocellulose from old corrugated containers
US-2025043508-A1 · Feb 6, 2025 · US
Fibrous raw materials or their mechanical treatment (pretreatment of the finely-divided materials before digesting D21C1/00; methods of beating or refining pulp D21D1/00; purification of the pulp suspension by mechanical means D21D5/00)
Fibrous raw materials or their mechanical treatment (pretreatment of the finely-divided materials before digesting D21C1/00; methods of beating or refining pulp D21D1/00; purification of the pulp suspension by mechanical means D21D5/00) · 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 | D21B1/00 |
| Official title | Fibrous raw materials or their mechanical treatment (pretreatment of the finely-divided materials before digesting D21C1/00; methods of beating or refining pulp D21D1/00; purification of the pulp suspension by mechanical means D21D5/00) |
| Display label | Fibrous raw materials or their mechanical treatment (pretreatment of the finely-divided materials before digesting D21C1/00; methods of beating or refining pulp D21D1/00; purification of the pulp suspension by mechanical means D21D5/00) |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 8 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Refining Segment
US-2024263395-A1 · Aug 8, 2024 · US
Processes and systems for producing nanocellulose from old corrugated containers
US-12018432-B2 · Jun 25, 2024 · US
Fiber body forming method and fiber body forming apparatus
US-11680372-B2 · Jun 20, 2023 · US
Blade Element for Refiner
US-2023183921-A1 · Jun 15, 2023 · US
System for the processing and resupply of pulp as well as a method for the construction thereof
US-2022389656-A1 · Dec 8, 2022 · US
Fiber body forming method and fiber body forming apparatus
US-2022251786-A1 · Aug 11, 2022 · US
Hopper and cutting process device
US-11390993-B2 · Jul 19, 2022 · US
Fiber body forming method and fiber body forming apparatus
US-11346054-B2 · May 31, 2022 · US
Processes and systems for producing nanocellulose from old corrugated containers
US-2021148048-A1 · May 20, 2021 · US
A system for transporting biomass material and a method for preventing blow back in said system
US-2021039893-A1 · Feb 11, 2021 · US
Raw material supply device, raw material supply method, and sheet manufacturing apparatus
US-10895869-B2 · Jan 19, 2021 · US
Rotary feeder with recess for protective baffle and shear edge assembly
US-10794001-B2 · Oct 6, 2020 · US
Processes and systems for producing nanocellulose from old corrugated containers
US-10753042-B2 · Aug 25, 2020 · US
Hopper and cutting process device
US-2020208348-A1 · Jul 2, 2020 · US
Fiber body forming method and fiber body forming apparatus
US-2020165780-A1 · May 28, 2020 · US
Processing biomass
US-2020109158-A1 · Apr 9, 2020 · US
Processing biomass
US-10519180-B2 · Dec 31, 2019 · US
Methods of compressing lignocellulosic feedstock into discrete units, and related systems
US-10344309-B2 · Jul 9, 2019 · US
Raw material supply device, raw material supply method, and sheet manufacturing apparatus
US-2019121330-A1 · Apr 25, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21B1/00?
- CPC D21B1/00 is the Cooperative Patent Classification code for “Fibrous raw materials or their mechanical treatment (pretreatment of the finely-divided materials before digesting D21C1/00; methods of beating or refining pulp D21D1/00; purification of the pulp suspension by mechanical means D21D5/00).”
- How many patents are filed under CPC D21B1/00 (Fibrous raw materials or their mechanical treatment (pretreatment of the finely-divided materials before digesting D21C1/00; methods of beating or refining pulp D21D1/00; purification of the pulp suspension by mechanical means D21D5/00))?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC D21B1/00 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).