Biocide control in paper making
US-2025198086-A1 · Jun 19, 2025 · US
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Tanks for storing or agitating pulp
Tanks for storing or agitating pulp · 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 | D21D5/28 |
| Official title | Tanks for storing or agitating pulp |
| Display label | Tanks for storing or agitating pulp |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for manufacturing a fibre web
US-12291820-B2 · May 6, 2025 · US
Arrangement and method for degassing a pump
US-2025101681-A1 · Mar 27, 2025 · US
Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance
US-12247354-B2 · Mar 11, 2025 · US
Arrangement and method for degassing a pump
US-12173451-B2 · Dec 24, 2024 · US
An accept tank mixing arrangement
US-2024229352-A1 · Jul 11, 2024 · US
Method for predicting or controlling microbial status of a paper or board making process
US-11859347-B2 · Jan 2, 2024 · US
Method for manufacturing a fibrous web
US-11598051-B2 · Mar 7, 2023 · US
Process for manufacturing a fibre web
US-2023031382-A1 · Feb 2, 2023 · US
Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance
US-2022325473-A1 · Oct 13, 2022 · US
Arrangement and method for degassing a pump
US-2022025578-A1 · Jan 27, 2022 · US
Method for Predicting or Controlling Microbial Status of a Paper or Board Making Process
US-2020299903-A1 · Sep 24, 2020 · US
Method for manufacturing a fibrous web
US-2020095730-A1 · Mar 26, 2020 · US
Screen feed arrangement
US-2019127912-A1 · May 2, 2019 · US
Bin arrangement for the collecting and discharging of smaller ligno-cellulosic material
US-9816229-B2 · Nov 14, 2017 · US
Bin arrangement for the collecting and discharging of smaller ligno-cellulosic material
US-2016040355-A1 · Feb 11, 2016 · US
Retrofit assembly and method for installing a hydraulic drive motor to a pressurized vessel
US-9212706-B2 · Dec 15, 2015 · US
Retrofit assembly and method for installing a hydraulic drive motor to a pressurized vessel
US-2015053362-A1 · Feb 26, 2015 · US