- All sections
- D - Textilespaper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 5/16 - Cylinders and plates for screens
Patent holdings for IPC class D21D 5/16
Total number of patents in this class: 82
10-year publication summary
|
4
|
4
|
7
|
7
|
4
|
1
|
1
|
11
|
3
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2742 |
29 |
| Aikawa Fiber Technologies Oy | 19 |
13 |
| Aikawa Fiber Technologies Trust | 7 |
5 |
| Kadant Black Clawson LLC | 49 |
5 |
| Andritz Fiedler GmbH | 30 |
4 |
| Andritz Oy | 293 |
3 |
| Comer S.p.A. | 5 |
2 |
| Metso Paper, Inc. | 331 |
2 |
| Valmet AB | 556 |
2 |
| Seiko Epson Corporation | 20365 |
1 |
| Advanced Fiber Technologies (aft) Trust | 3 |
1 |
| Aikawa Iron Works Co., Ltd. | 7 |
1 |
| Andritz AG | 246 |
1 |
| Andritz Inc. | 324 |
1 |
| Anpap Oy | 2 |
1 |
| Filtration Fibrewall Inc. | 2 |
1 |
| Georgia-Pacific Consumer Products LP | 99 |
1 |
| Kadant Canada Corp. | 16 |
1 |
| GPCP IP Holdings LLC | 1531 |
1 |
| Aikawa Fiber Technologies Inc. | 19 |
1 |
| Other owners | 6 |