- All sections
- D - Textilespaper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 5/18 - Purification of the pulp suspension by mechanical meansApparatus therefor with the aid of centrifugal force
Patent holdings for IPC class D21D 5/18
Total number of patents in this class: 18
10-year publication summary
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1
|
2
|
3
|
0
|
1
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2
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1
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3
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1
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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
|
|---|---|---|
| Seiko Epson Corporation | 20528 |
7 |
| Cmblu Energy AG | 58 |
3 |
| Kimberly-clark Worldwide, Inc. | 5254 |
1 |
| Imerys Talc Europe | 67 |
1 |
| Metso Paper, Inc. | 325 |
1 |
| Valmet AB | 565 |
1 |
| Voith Patent GmbH | 2743 |
1 |
| Hadera Paper Ltd. | 1 |
1 |
| Cmblu Projektag | 1 |
1 |
| Shanying International Holding Co., Ltd | 4 |
1 |
| Other owners | 0 |