- All sections
- D - Textilespaper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 1/00 - Methods of beating or refiningBeaters of the Hollander type
Patent holdings for IPC class D21D 1/00
Total number of patents in this class: 131
10-year publication summary
|
6
|
9
|
15
|
14
|
16
|
7
|
10
|
9
|
6
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2752 |
16 |
| Andritz Inc. | 326 |
14 |
| International Paper Company | 607 |
13 |
| Stora Enso Oyj | 1632 |
8 |
| Valmet Technologies Oy | 286 |
7 |
| Fiberlean Technologies Limited | 104 |
6 |
| Domtar Paper Company, LLC | 123 |
4 |
| FPInnovations | 225 |
4 |
| UPM-Kymmene Corporation | 981 |
4 |
| Valmet AB | 538 |
3 |
| Valmet Technologies, Inc. | 136 |
3 |
| ABB Research Ltd. | 812 |
2 |
| Aikawa Iron Works Co., Ltd. | 7 |
2 |
| Andritz Fiedler GmbH | 29 |
2 |
| Buckman Laboratories International, Inc. | 240 |
2 |
| Kadant Lamort | 23 |
2 |
| Philippe Saint GER AG | 9 |
2 |
| Polycorp Ltd. | 66 |
2 |
| WestRock MWV, LLC | 330 |
2 |
| Honda Motor Co., Ltd. | 25890 |
1 |
| Other owners | 32 |