- All sections
- D - Textilespaper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 5/06 - Rotary screen-drums
Patent holdings for IPC class D21D 5/06
Total number of patents in this class: 58
10-year publication summary
|
2
|
1
|
7
|
5
|
5
|
3
|
5
|
2
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2756 |
9 |
| Seiko Epson Corporation | 19319 |
8 |
| Andritz Oy | 282 |
8 |
| Andritz Ltd. | 17 |
3 |
| Metso Paper, Inc. | 424 |
3 |
| Aikawa Fiber Technologies Trust | 9 |
2 |
| Andritz Inc. | 333 |
2 |
| International Paper Company | 791 |
2 |
| Meri Environmental Solutions GmbH | 42 |
2 |
| Papyrus Australia Limited | 2 |
2 |
| Valmet AB | 503 |
2 |
| Aikawa Fiber Technologies Inc. | 16 |
2 |
| Andritz China Ltd | 10 |
2 |
| Siemens AG | 24520 |
1 |
| Advanced Fiber Technologies (aft) Trust | 3 |
1 |
| Andritz Fiedler GmbH | 28 |
1 |
| Anpap Oy | 4 |
1 |
| Kadant Black Clawson Inc. | 7 |
1 |
| Kadant Canada Corp. | 14 |
1 |
| Ovivo Luxembourg S.a.r.l. | 20 |
1 |
| Other owners | 4 |