- All sections
- D - Textilespaper
- D21B - Fibrous raw materials or their mechanical treatment
- D21B 1/28 - Dressers for mill stones, combined with the mill
Patent holdings for IPC class D21B 1/28
Total number of patents in this class: 6
10-year publication summary
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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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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
|
|---|---|---|
| FW Roberts Manufacturing Company, Inc. | 1 |
1 |
| M-real Oyj | 26 |
1 |
| Metso Paper, Inc. | 425 |
1 |
| Myllykoski Oyj | 2 |
1 |
| Stora Enso Oyj | 1634 |
1 |
| UPM-Kymmene Oyj | 52 |
1 |
| Other owners | 0 |