System for treatment of a biomass material and a method for connecting a valve to a transporting pipe
US-11674264-B2 · Jun 13, 2023 · US
Means for circulating the lye
Means for circulating the 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 | D21C7/14 |
| Official title | Means for circulating the lye |
| Display label | Means for circulating the lye |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing chemical pulp
US-11473241-B2 · Oct 18, 2022 · US
System for treatment of a biomass material and a method for connecting a valve to a transporting pipe
US-2021197155-A1 · Jul 1, 2021 · US
Method of producing chemical pulp
US-2020181838-A1 · Jun 11, 2020 · US
Method of removing odors from fibrous materials used in forming biocomposite materials
US-10472767-B2 · Nov 12, 2019 · US
Method and arrangement for generating steam at a digester plant of a chemical pulp mill
US-10329713-B2 · Jun 25, 2019 · US
Profile bar screen for digester vessels
US-10087579-B2 · Oct 2, 2018 · US
Pile delignification
US-10006167-B2 · Jun 26, 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
Profile bar screen for digester vessels
US-2017284022-A1 · Oct 5, 2017 · US
Continuous digester and feeding system
US-9644317-B2 · May 9, 2017 · US
Methods and systems for distributing a slurry catalyst in cellulosic biomass solids
US-9593242-B2 · Mar 14, 2017 · US
Method of digesting cellulose fibrous material in a continuous digester
US-2017022664-A1 · Jan 26, 2017 · US
Method and arrangement for generating steam at a digester plant of a chemical pulp mill
US-2017016180-A1 · Jan 19, 2017 · US
Method Of Removing Odors From Fibrous Materials Used In Forming Biocomposite Materials
US-2017002514-A1 · Jan 5, 2017 · US
Methods for digestion of cellulosic biomass solids in the presence of a phenolic solvent generated in situ from lignin
US-9458247-B2 · Oct 4, 2016 · US
Methods for digestion of cellulosic biomass solids in the presence of a phenolic solvent generated in situ from lignin
US-9376501-B2 · Jun 28, 2016 · US
Continuous digester and feeding system
US-2016145797-A1 · May 26, 2016 · US
Digestion units configured for high yield biomass processing
US-9199212-B2 · Dec 1, 2015 · US
Two vessel reactor system and method for hydrolysis and digestion of wood chips with chemical enhanced wash method
US-9194080-B2 · Nov 24, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C7/14?
- CPC D21C7/14 is the Cooperative Patent Classification code for “Means for circulating the lye.”
- How many patents are filed under CPC D21C7/14 (Means for circulating the lye)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC D21C7/14 growing?
- Publication counts under this code: 1 in 2022 vs 1 in 2023 (latest complete years).