- 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: 134
10-year publication summary
6
|
6
|
9
|
15
|
14
|
16
|
7
|
9
|
9
|
6
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Voith Patent GmbH | 2755 |
16 |
Andritz Inc. | 333 |
14 |
International Paper Company | 790 |
13 |
Stora Enso Oyj | 1637 |
8 |
Fiberlean Technologies Limited | 114 |
7 |
Valmet Technologies Oy | 287 |
6 |
Domtar Paper Company, LLC | 121 |
4 |
FPInnovations | 244 |
4 |
UPM-Kymmene Corporation | 938 |
4 |
Valmet AB | 503 |
3 |
Valmet Technologies, Inc. | 147 |
3 |
ABB Research Ltd. | 887 |
2 |
Aikawa Iron Works Co., Ltd. | 7 |
2 |
Andritz Fiedler GmbH | 28 |
2 |
Buckman Laboratories International, Inc. | 235 |
2 |
Kadant Lamort | 23 |
2 |
Philippe Saint GER AG | 9 |
2 |
Polycorp Ltd. | 67 |
2 |
The University of British Columbia | 1497 |
2 |
WestRock MWV, LLC | 340 |
2 |
Other owners | 34 |