- All sections
- D - Textilespaper
- D21H - Pulp compositionspreparation thereof not covered by subclasses , impregnating or coating of papertreatment of finished paper not covered by class or subclass paper not otherwise provided for
- D21H 23/18 - Addition at a location where shear forces are avoided before sheet-forming, e.g. after pulp beating or refining
Patent holdings for IPC class D21H 23/18
Total number of patents in this class: 9
10-year publication summary
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0
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0
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1
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1
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0
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0
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0
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0
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1
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1212 |
3 |
| Solenis Technologies, L.P. | 337 |
2 |
| BASF SE | 20991 |
1 |
| Stora Enso Oyj | 1656 |
1 |
| SNF Group | 360 |
1 |
| Solenis Technologies Cayman, L.P. | 34 |
1 |
| Other owners | 0 |