- All sections
- D - Textilespaper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 1/22 - Jordans
Patent holdings for IPC class D21D 1/22
Total number of patents in this class: 45
10-year publication summary
|
1
|
2
|
2
|
3
|
3
|
2
|
7
|
5
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valmet Technologies Oy | 288 |
6 |
| Voith Patent GmbH | 2749 |
5 |
| Metso Paper, Inc. | 338 |
4 |
| Andritz Inc. | 322 |
3 |
| CVP Clean Value Plastics GmbH | 15 |
3 |
| Valmet Technologies, Inc. | 136 |
3 |
| Aikawa Fiber Technologies Inc. | 19 |
3 |
| Andritz Fiedler GmbH | 30 |
2 |
| Suzano S.A. | 196 |
2 |
| Seiko Epson Corporation | 20256 |
1 |
| Aikawa Iron Works Co., Ltd. | 7 |
1 |
| Andritz AG | 244 |
1 |
| Eastman Chemical Company | 2087 |
1 |
| International Paper Company | 600 |
1 |
| Metso Paper Sweden Aktiebolag | 44 |
1 |
| Officine Airaghi S.r.l. | 2 |
1 |
| UPM-Kymmene Corporation | 994 |
1 |
| Valmet AB | 554 |
1 |
| Kadant Black Clawson LLC | 49 |
1 |
| GUSTAFSSON, Sirkka | 2 |
1 |
| Other owners | 3 |