- All sections
- D - Textilespaper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 5/24 - Purification of the pulp suspension by mechanical meansApparatus therefor with the aid of centrifugal force in cyclones
Patent holdings for IPC class D21D 5/24
Total number of patents in this class: 59
10-year publication summary
|
8
|
5
|
3
|
2
|
6
|
5
|
2
|
7
|
3
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19319 |
14 |
| Voith Patent GmbH | 2756 |
10 |
| The Procter & Gamble Company | 22037 |
6 |
| Pulmac Systems International, Inc. | 7 |
6 |
| Ovivo Luxembourg S.a.r.l. | 20 |
3 |
| Kadant Black Clawson LLC | 38 |
3 |
| Glv Finance Hungary Kft, Luxembourg Branch | 3 |
2 |
| GL&V Luxembourg S.à.r.l. | 22 |
2 |
| Andritz AG | 232 |
1 |
| Andritz Inc. | 333 |
1 |
| Andritz Oy | 282 |
1 |
| Metso Paper, Inc. | 424 |
1 |
| Valmet Technologies Oy | 287 |
1 |
| Ovivo Luxembourg S.a.r.l., Luxembourg Branch | 1 |
1 |
| Nantong Xianglong Paper Industries Co.,Ltd. | 3 |
1 |
| Nova Pangaea Technologies (UK) Limited | 10 |
1 |
| Eriksson, Linus AS legal Representative of Eriksson, Bengt (deceased) | 1 |
1 |
| Eriksson, LUKAS AS legal Representative of Eriksson, Bengt (deceased) | 1 |
1 |
| Goldcup 33965 AB (unc. Hejmas Agrifibre Technologies AB) | 1 |
1 |
| GL&V Luxembourg S.A R.L. | 2 |
1 |
| Other owners | 1 |