- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 5/02 - Drying on cylinders
Patent holdings for IPC class D21F 5/02
Total number of patents in this class: 171
10-year publication summary
|
6
|
13
|
15
|
9
|
9
|
8
|
11
|
14
|
6
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2764 |
38 |
| Valmet AB | 532 |
18 |
| A. Celli Paper S.p.A. | 28 |
14 |
| Andritz AG | 238 |
13 |
| MainTech Co., Ltd. | 67 |
13 |
| Toscotec S.p.A. | 39 |
12 |
| GPCP IP Holdings LLC | 1603 |
8 |
| Valmet, Inc. | 48 |
5 |
| Seiko Epson Corporation | 19786 |
4 |
| Kadant Johnson LLC | 30 |
3 |
| Andritz China Ltd | 10 |
3 |
| James Cropper Plc | 17 |
2 |
| Metso Paper, Inc. | 393 |
2 |
| Stora Enso Oyj | 1652 |
2 |
| Suominen Oyj | 9 |
2 |
| Koehler Innovation & Technology GmbH | 50 |
2 |
| The Procter & Gamble Company | 21977 |
1 |
| Honeywell International Inc. | 13559 |
1 |
| Airbus Operations GmbH | 3389 |
1 |
| Albany International Corp. | 243 |
1 |
| Other owners | 26 |