- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 1/70 - Pulp catching, de-watering, or recoveringRe-use of pulp-water by flotation
Patent holdings for IPC class D21F 1/70
Total number of patents in this class: 13
10-year publication summary
|
1
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0
|
1
|
0
|
0
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0
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1
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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
|
|---|---|---|
| Voith Patent GmbH | 2764 |
9 |
| Comer S.p.A. | 5 |
1 |
| Kurita Water Industries Ltd. | 1196 |
1 |
| Metso Paper, Inc. | 421 |
1 |
| Stora Enso Sachsen GmbH | 1 |
1 |
| Other owners | 0 |