- 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: 174
10-year publication summary
|
6
|
15
|
17
|
9
|
10
|
10
|
11
|
14
|
9
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2742 |
38 |
| Valmet AB | 556 |
19 |
| MainTech Co., Ltd. | 66 |
14 |
| Andritz AG | 246 |
13 |
| Toscotec S.p.A. | 40 |
13 |
| A. Celli Paper S.p.A. | 18 |
9 |
| GPCP IP Holdings LLC | 1531 |
8 |
| Valmet, Inc. | 47 |
5 |
| Andritz Pulp & Paper Italy S.r.l. | 12 |
5 |
| Seiko Epson Corporation | 20365 |
4 |
| Kadant Johnson LLC | 29 |
3 |
| Andritz China Ltd | 10 |
3 |
| James Cropper Plc | 17 |
2 |
| Stora Enso Oyj | 1660 |
2 |
| Suominen Oyj | 13 |
2 |
| Koehler Innovation & Technology GmbH | 56 |
2 |
| The Procter & Gamble Company | 21859 |
1 |
| Honeywell International Inc. | 12770 |
1 |
| Airbus Operations GmbH | 3457 |
1 |
| Albany International Corp. | 231 |
1 |
| Other owners | 28 |