Method for preparing fluff pulp from bamboos and fluff pulp prepared thereby
US-12286750-B2 · Apr 29, 2025 · US
This page is not indexed by search engines while we improve data quality.
of {acid, neutral or alkaline} sulfite lye
of {acid, neutral or alkaline} sulfite lye · 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 | D21C11/02 |
| Official title | of {acid, neutral or alkaline} sulfite lye |
| Display label | of {acid, neutral or alkaline} sulfite lye |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2018 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing fluff pulp from bamboos and fluff pulp prepared thereby
US-2024328083-A1 · Oct 3, 2024 · US
Method for controlling a chemical recovery boiler and a chemical recovery boiler
US-12104319-B2 · Oct 1, 2024 · US
Method and system for producing lignin
US-2024287737-A1 · Aug 29, 2024 · US
Method for controlling a chemical recovery boiler and a chemical recovery boiler
US-2023057366-A1 · Feb 23, 2023 · US
Method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use
US-2022259246-A1 · Aug 18, 2022 · US
Method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use
US-11267837-B2 · Mar 8, 2022 · US
Process for controlling the sodium and sulfur balance in a pulp mill
US-2021130208-A1 · May 6, 2021 · US
A method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use
US-2018148467-A1 · May 31, 2018 · US
Method for producing bio-methanol at pulp mills
US-9394220-B2 · Jul 19, 2016 · US
Method for producing bio-methanol at pulp mills
US-2016122267-A1 · May 5, 2016 · US
Conditioning of so2-ethanol-water spent liquor for fermentation by clostridia
US-2015225896-A1 · Aug 13, 2015 · US
Conditioning of SO2-ethanol-water spent liquor for fermentation by clostridia
US-9012188-B2 · Apr 21, 2015 · US