- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 3/10 - Suction rolls, e.g. couch rolls
Patent holdings for IPC class D21F 3/10
Total number of patents in this class: 135
10-year publication summary
|
11
|
7
|
7
|
7
|
5
|
9
|
12
|
4
|
9
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2762 |
66 |
| Stowe Woodward Licensco, LLC | 52 |
24 |
| Metso Paper, Inc. | 422 |
5 |
| Rochling Leripa Papertech GmbH & Co. KG | 17 |
4 |
| Andritz AG | 233 |
3 |
| Seiko Epson Corporation | 19398 |
2 |
| Runtech Systems Oy | 23 |
2 |
| Stora Enso Oyj | 1647 |
2 |
| Stowe Woodward, L.L.C. | 13 |
2 |
| Valmet AB | 508 |
2 |
| Valmet Technologies, Inc. | 146 |
2 |
| The Procter & Gamble Company | 22043 |
1 |
| Kimberly-clark Worldwide, Inc. | 5502 |
1 |
| A. Celli Paper S.p.A. | 34 |
1 |
| Berndorf Band GmbH | 113 |
1 |
| Chan Li Machinery Co., Ltd. | 33 |
1 |
| Ichikawa Co., Ltd. | 101 |
1 |
| Outokumpu Oyj | 260 |
1 |
| Structured I, LLC | 58 |
1 |
| Toscotec S.p.A. | 36 |
1 |
| Other owners | 12 |