- All sections
- D - Textilespaper
- D21G - Calendersaccessories for paper-making machines
- D21G 1/02 - RollsTheir bearings
Patent holdings for IPC class D21G 1/02
Total number of patents in this class: 227
10-year publication summary
|
12
|
10
|
6
|
10
|
14
|
20
|
7
|
12
|
7
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2743 |
74 |
| Metso Paper, Inc. | 335 |
32 |
| Stowe Woodward Licensco, LLC | 51 |
12 |
| Andritz Kusters GmbH | 53 |
10 |
| Futura S.p.A. | 141 |
7 |
| Kimberly-clark Worldwide, Inc. | 5295 |
5 |
| Ing. Gerritse Holding B.V. | 6 |
5 |
| Valmet Technologies Oy | 288 |
4 |
| GTK Timek Group SA | 11 |
4 |
| Seiko Epson Corporation | 20327 |
3 |
| Aalto University Foundation | 323 |
3 |
| Andritz AG | 245 |
3 |
| Stowe Woodward, L.L.C. | 12 |
3 |
| Matthews International GmbH | 71 |
3 |
| Schaeffler KG | 452 |
2 |
| Schafer Composites GmbH | 3 |
2 |
| SchäferRolls GmbH & Co. KG | 5 |
2 |
| WestRock MWV, LLC | 328 |
2 |
| Suominen Oyj | 13 |
2 |
| Siemens AG | 23996 |
1 |
| Other owners | 48 |