Method for preparing biomechanical unbleached pulp from wheat straw and full utilization of by-products thereof
US-12454792-B2 · Oct 28, 2025 · US
with alkaline reacting compounds
with alkaline reacting compounds · 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 | D21C1/06 |
| Official title | with alkaline reacting compounds |
| Display label | with alkaline reacting compounds |
| Total patents | 64 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 12 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing unbleached biomechanical pulp from straws and full utilization of by-products
US-12442134-B2 · Oct 14, 2025 · US
Method for preparing unbleached biomechanical pulp by hot steam in coordination with biological enzyme treatment of wheat straw and full utilization of by-products thereof
US-12428784-B2 · Sep 30, 2025 · US
Processes and systems for biomass impregnation to improve conversion to sugars, chemicals, fuels, and materials
US-12359371-B2 · Jul 15, 2025 · US
Methylation of kraft lignin
US-2025206891-A1 · Jun 26, 2025 · US
High brightness non-wood pulp
US-2025146219-A1 · May 8, 2025 · US
High brightness non-wood pulp
US-12227900-B2 · Feb 18, 2025 · US
Highly refined pulp from fibers obtained from used beverage cartons
US-2025043512-A1 · Feb 6, 2025 · US
Non-wood pulp having high brightness and low debris
US-2025012010-A1 · Jan 9, 2025 · US
Non-wood pulp having high brightness and low debris
US-12146262-B2 · Nov 19, 2024 · US
Pickering emulsion stabilized by cellulose nanocrystals from ginkgo seed shells and preparation method thereof
US-12115221-B2 · Oct 15, 2024 · US
Method for preparing fluff pulp from bamboos and fluff pulp prepared thereby
US-2024328083-A1 · Oct 3, 2024 · US
Method of feeding wood chips to a prehydrolysis reactor
US-11993895-B2 · May 28, 2024 · US
Non-wood pulp having high brightness and low debris
US-2024018723-A1 · Jan 18, 2024 · US
High brightness non-wood pulp
US-2023407562-A1 · Dec 21, 2023 · US
Method for preparing unbleached biomechanical pulp and fully utilizing by-products by treating straws with heat steam in synergy with biological enzyme
US-11834784-B2 · Dec 5, 2023 · US
Use of alkanolamines for lignin extraction in the pretreatment of biomass
US-2023220121-A1 · Jul 13, 2023 · US
Method for preparing unbleached biomechanical pulp from straw
US-11624154-B2 · Apr 11, 2023 · US
Method for manufacturing bleached pulp from a feedstock comprising recycled paper
US-2023073443-A1 · Mar 9, 2023 · US
Method for preparing unbleached biomechanical pulp from straw
US-11566376-B2 · Jan 31, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C1/06?
- CPC D21C1/06 is the Cooperative Patent Classification code for “with alkaline reacting compounds.”
- How many patents are filed under CPC D21C1/06 (with alkaline reacting compounds)?
- Our database includes 64 publications tagged with this CPC code.
- Is patent activity under CPC D21C1/06 growing?
- Publication counts under this code: 5 in 2024 vs 12 in 2025 (latest complete years).