- All sections
- D - Textilespaper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 5/00 - Purification of the pulp suspension by mechanical meansApparatus therefor
Patent holdings for IPC class D21D 5/00
Total number of patents in this class: 36
10-year publication summary
|
1
|
5
|
2
|
0
|
4
|
0
|
1
|
3
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2740 |
4 |
| Andritz Inc. | 324 |
3 |
| FPInnovations | 224 |
3 |
| NORAM Engineering and Constructors Ltd. | 29 |
3 |
| Valmet AB | 561 |
3 |
| API Intellectual Property Holdings, LLC | 77 |
2 |
| Stora Enso Oyj | 1661 |
2 |
| Seiko Epson Corporation | 20446 |
1 |
| Billerudkorsnas AB | 88 |
1 |
| Chempolis Oy | 27 |
1 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1451 |
1 |
| Domsjö Fabriker AB | 7 |
1 |
| Hunan University | 187 |
1 |
| Metso Paper, Inc. | 329 |
1 |
| Oji Holdings Corporation | 807 |
1 |
| Outotec Oyj | 234 |
1 |
| The United States of America, as represented by the Secretary of Agriculture | 1157 |
1 |
| UPM-Kymmene Corporation | 1007 |
1 |
| Kadant Black Clawson LLC | 49 |
1 |
| Papierholz Austria GmbH | 7 |
1 |
| Other owners | 3 |