- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 1/82 - Pulp catching, de-watering, or recoveringRe-use of pulp-water adding fibre agglomeration compositions
Patent holdings for IPC class D21F 1/82
Total number of patents in this class: 8
10-year publication summary
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0
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2
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3
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0
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0
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0
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0
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0
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0
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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
|
|---|---|---|
| Nalco Company | 594 |
2 |
| Voith Patent GmbH | 2740 |
2 |
| Xinjiang Guoliyuan Investment Co., Ltd. | 9 |
2 |
| ABB Schweiz AG | 6635 |
1 |
| Solenis Technologies, L.P. | 323 |
1 |
| Other owners | 0 |