- All sections
- D - Textilespaper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 5/04 - Flat screens
Patent holdings for IPC class D21D 5/04
Total number of patents in this class: 34
10-year publication summary
|
5
|
2
|
3
|
1
|
3
|
3
|
3
|
2
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2742 |
14 |
| Kadant Lamort | 26 |
3 |
| Red Wire Oy | 5 |
3 |
| Andritz AG | 246 |
2 |
| PR Pulping Oy | 3 |
2 |
| Seiko Epson Corporation | 20365 |
1 |
| Andritz Fiedler GmbH | 30 |
1 |
| CDE Global Limited | 70 |
1 |
| Primetals Technologies Germany GmbH | 224 |
1 |
| TamPulping Oy | 4 |
1 |
| Valmet Technologies Oy | 288 |
1 |
| GL&V USA Inc. | 4 |
1 |
| Suzano S.A. | 192 |
1 |
| Andritz China Ltd | 10 |
1 |
| BastCore, Inc. | 9 |
1 |
| Other owners | 0 |