Starch fixation and retention in recycled fiber systems
US-2024376668-A1 · Nov 14, 2024 · US
Chemicals therefor
Chemicals 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 | D21C5/027 |
| Official title | {Chemicals therefor} |
| Display label | Chemicals therefor |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 3 |
| 2020 | 7 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Recyclable and reusable pollen paper
US-2024158988-A1 · May 16, 2024 · US
Hygromorphic composite material
US-2024150959-A1 · May 9, 2024 · US
Starch fixation and retention in recycled fiber systems
US-11976418-B2 · May 7, 2024 · US
Method for bleaching pulp from recycled textile material
US-2023392320-A1 · Dec 7, 2023 · US
Method for treating aqueous feed by dissolved gas flotation
US-11629459-B2 · Apr 18, 2023 · US
Starch fixation and retention in recycled fiber systems
US-2023116374-A1 · Apr 13, 2023 · US
Method for removing foreign materials from the surface of an article
US-2023002575-A1 · Jan 5, 2023 · US
Processing apparatus, sheet manufacturing apparatus, processing method, and sheet manufacturing method
US-11408124-B2 · Aug 9, 2022 · US
Processing device, sheet manufacturing device, processing method, and method for manufacturing sheet
US-10876255-B2 · Dec 29, 2020 · US
Method for treating aqueous feed by dissolved gas flotation
US-2020399828-A1 · Dec 24, 2020 · US
Method for dewatering of sludge from a pulp, paper or board making process
US-10858782-B2 · Dec 8, 2020 · US
Processing device, sheet manufacturing apparatus, processing method, and sheet manufacturing method
US-10781554-B2 · Sep 22, 2020 · US
Method for dewatering of sludge from a pulp, paper or board making process
US-2020063340-A1 · Feb 27, 2020 · US
Method for deinking recycled paper
US-10550515-B2 · Feb 4, 2020 · US
Process for the deinking of coated paper or paperboard
US-10544544-B2 · Jan 28, 2020 · US
Method for suppressing pitch formation
US-10519598-B2 · Dec 31, 2019 · US
Method for producing paper, and pitch removal agent
US-10370794-B2 · Aug 6, 2019 · US
Processing apparatus, sheet manufacturing apparatus, processing method, and sheet manufacturing method
US-2019203415-A1 · Jul 4, 2019 · US
Processing device, sheet manufacturing apparatus, processing method, and sheet manufacturing method
US-2018305869-A1 · Oct 25, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C5/027?
- CPC D21C5/027 is the Cooperative Patent Classification code for “Chemicals therefor.”
- How many patents are filed under CPC D21C5/027 (Chemicals therefor)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC D21C5/027 growing?
- Publication counts under this code: 4 in 2023 vs 4 in 2024 (latest complete years).