Far superior oxidation catalysts based on macrocyclic compounds
US-2018304247-A1 · Oct 25, 2018 · US
Bleaching {; Apparatus therefor}
Bleaching {; Apparatus therefor} · 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 | D21C9/10 |
| Official title | Bleaching {; Apparatus therefor} |
| Display label | Bleaching {; Apparatus therefor} |
| Total patents | 162 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 16 |
| 2017 | 8 |
| 2018 | 17 |
| 2019 | 7 |
| 2020 | 18 |
| 2021 | 13 |
| 2022 | 15 |
| 2023 | 10 |
| 2024 | 15 |
| 2025 | 18 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nanolignocellulose compositions and processes to produce these compositions
US-2018298113-A1 · Oct 18, 2018 · US
Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom
US-10093748-B2 · Oct 9, 2018 · US
Nanocellulose production co-located at a pulp and paper mill
US-2018251941-A1 · Sep 6, 2018 · US
Process for producing a nanofibrillar cellulose hydrogel
US-2018179703-A1 · Jun 28, 2018 · US
Method for delignifying and bleaching pulp
US-10006169-B2 · Jun 26, 2018 · US
Method for reducing pulp viscosity in production of dissolving pulp
US-2018163344-A1 · Jun 14, 2018 · US
Cannabis fiber, absorbent cellulosic structures containing cannabis fiber and methods of making the same
US-9988763-B2 · Jun 5, 2018 · US
Process for producing increased bulk pulp fibers, pulp fibers obtained, and products incorporating same
US-2018127919-A1 · May 10, 2018 · US
Processes and systems for the pulping of lignocellulosic materials
US-2018105982-A1 · Apr 19, 2018 · US
Novel metalloproteases
US-2018087038-A1 · Mar 29, 2018 · US
Washing apparatus and method for preparation of cellulose fibers for use in manufacture of biocomposite materials
US-9915030-B2 · Mar 13, 2018 · US
Manufacturing feedstock from fruit by-product processing
US-9909260-B2 · Mar 6, 2018 · US
Synthesis of nanostructures from Phoenix dactylifera agro-wastes
US-9896342-B1 · Feb 20, 2018 · US
Integration of non-woody biorefining at pulp and paper plants
US-9856605-B2 · Jan 2, 2018 · US
Processes and systems for producing nanocellulose from old corrugated containers
US-2017370047-A1 · Dec 28, 2017 · US
Enzymatic pretreatment of wood in a method for producing mechanical paper pulp
US-9834886-B2 · Dec 5, 2017 · US
Printing paper and method for producing printed material
US-9731497-B2 · Aug 15, 2017 · US
Processes for producing nanocellulose, and nanocellulose compositions produced therefrom
US-2017210826-A1 · Jul 27, 2017 · US
Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom
US-2017210827-A1 · Jul 27, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C9/10?
- CPC D21C9/10 is the Cooperative Patent Classification code for “Bleaching {; Apparatus therefor}.”
- How many patents are filed under CPC D21C9/10 (Bleaching {; Apparatus therefor})?
- Our database includes 162 publications tagged with this CPC code.
- Is patent activity under CPC D21C9/10 growing?
- Publication counts under this code: 15 in 2024 vs 18 in 2025 (latest complete years).