- 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 23/16 - Addition before or during pulp beating or refining
Patent holdings for IPC class D21H 23/16
Total number of patents in this class: 20
10-year publication summary
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0
|
4
|
2
|
3
|
1
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0
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0
|
2
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1264 |
5 |
| UPM-Kymmene Corporation | 1004 |
4 |
| Daio Paper Corporation | 1413 |
2 |
| Domtar Paper Company, LLC | 122 |
2 |
| BASF SE | 21320 |
1 |
| Fiberlean Technologies Limited | 98 |
1 |
| Kemira Chemicals, Inc. | 76 |
1 |
| Solenis Technologies, L.P. | 303 |
1 |
| Adamoli, James R. | 1 |
1 |
| Dzudzelija, Nedeljko R. | 1 |
1 |
| Solenis Technologies Cayman, L.P. | 21 |
1 |
| Other owners | 0 |