Fiber assembly-forming method and fiber assembly-forming apparatus
US-2020385924-A1 · Dec 10, 2020 · US
the raw material being waste paper (chemical part D21C5/02); the raw material being rags
the raw material being waste paper (chemical part D21C5/02); the raw material being rags · 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 | D21B1/08 |
| Official title | the raw material being waste paper (chemical part D21C5/02); the raw material being rags |
| Display label | the raw material being waste paper (chemical part D21C5/02); the raw material being rags |
| Total patents | 140 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 15 |
| 2017 | 13 |
| 2018 | 8 |
| 2019 | 14 |
| 2020 | 14 |
| 2021 | 15 |
| 2022 | 12 |
| 2023 | 13 |
| 2024 | 11 |
| 2025 | 15 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Web forming device and sheet manufacturing apparatus
US-2019381690-A1 · Dec 19, 2019 · US
Sheet manufacturing apparatus and sheet manufacturing method
US-10472766-B2 · Nov 12, 2019 · US
Defibration processing device, and fibrous feedstock recycling device
US-2019301092-A1 · Oct 3, 2019 · US
Sheet manufacturing apparatus and sheet manufacturing method
US-10407828-B2 · Sep 10, 2019 · US
Material processing device and sheet manufacturing apparatus
US-2019270088-A1 · Sep 5, 2019 · US
Raw material supply device and sheet manufacturing apparatus
US-2019263018-A1 · Aug 29, 2019 · US
Processing apparatus, sheet manufacturing apparatus, processing method, and sheet manufacturing method
US-2019203415-A1 · Jul 4, 2019 · US
Sheet manufacturing apparatus
US-2019100877-A1 · Apr 4, 2019 · US
Sheet manufacturing apparatus
US-10246824-B2 · Apr 2, 2019 · US
Sheet manufacturing apparatus
US-2019093286-A1 · Mar 28, 2019 · US
Low temperature and efficient fractionation of lignocellulosic biomass using recyclable organic solid acids
US-10239905-B2 · Mar 26, 2019 · US
Defibrated material manufacturing device, and sheet manufacturing apparatus
US-2019032280-A1 · Jan 31, 2019 · US
Defibrated material manufacturing device, and sheet manufacturing apparatus
US-2019030750-A1 · Jan 31, 2019 · US
Sheet manufacturing apparatus
US-10179423-B2 · Jan 15, 2019 · US
Processing device, sheet manufacturing apparatus, processing method, and manufacturing method of sheet
US-2018305867-A1 · Oct 25, 2018 · US
Processing device, sheet manufacturing apparatus, processing method, and sheet manufacturing method
US-2018305868-A1 · Oct 25, 2018 · US
Processing device, sheet manufacturing device, processing method, and method for manufacturing sheet
US-2018305870-A1 · Oct 25, 2018 · US
Sheet manufacturing apparatus
US-10081913-B2 · Sep 25, 2018 · US
Low Temperature and Efficient Fractionation of Lignocellulosic Biomass Using Recyclable Organic Solid Acids
US-2018215774-A1 · Aug 2, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21B1/08?
- CPC D21B1/08 is the Cooperative Patent Classification code for “the raw material being waste paper (chemical part D21C5/02); the raw material being rags.”
- How many patents are filed under CPC D21B1/08 (the raw material being waste paper (chemical part D21C5/02); the raw material being rags)?
- Our database includes 140 publications tagged with this CPC code.
- Is patent activity under CPC D21B1/08 growing?
- Publication counts under this code: 11 in 2024 vs 15 in 2025 (latest complete years).