A cellulose paper composite and process for preparation thereof
US-2020340182-A1 · Oct 29, 2020 · US
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with halogens or halogen-containing compounds (D21C9/16 takes precedence)
with halogens or halogen-containing compounds (D21C9/16 takes precedence) · 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 | D21C9/12 |
| Official title | with halogens or halogen-containing compounds (D21C9/16 takes precedence) |
| Display label | with halogens or halogen-containing compounds (D21C9/16 takes precedence) |
| Total patents | 8 |
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 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2020 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for reducing content of hexenuronic acids in cellulosic pulp
US-10570562-B2 · Feb 25, 2020 · US
Reducing content of hexenuronic acids in cellulosic pulp
US-2018230649-A1 · Aug 16, 2018 · US
Reducing content of hexenuronic acids in cellulosic pulp
US-9970157-B2 · May 15, 2018 · US
Method for bleaching pulp
US-9540767-B2 · Jan 10, 2017 · US
Reducing content of hexenuronic acids in cellulosic pulp
US-2016177503-A1 · Jun 23, 2016 · US
Method of producing dissolving pulp, dissolving pulp and use of method
US-2015225901-A1 · Aug 13, 2015 · US
Method For Bleaching Pulp
US-2015152600-A1 · Jun 4, 2015 · US