- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 5/00 - Dryer section of machines for making continuous webs of paper
Patent holdings for IPC class D21F 5/00
Total number of patents in this class: 159
10-year publication summary
|
7
|
12
|
13
|
6
|
9
|
8
|
3
|
9
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2778 |
23 |
| Stora Enso Oyj | 1631 |
15 |
| Metso Paper, Inc. | 360 |
12 |
| MainTech Co., Ltd. | 67 |
10 |
| Berndorf Band GmbH | 116 |
4 |
| Billerudkorsnas AB | 88 |
4 |
| delfortgroup AG | 154 |
4 |
| Kimberly-clark Worldwide, Inc. | 5281 |
3 |
| Andritz AG | 237 |
3 |
| Andritz Technology and Asset Management GmbH | 84 |
3 |
| Meri Environmental Solutions GmbH | 44 |
3 |
| Nalco Company | 550 |
3 |
| Oji Holdings Corporation | 773 |
3 |
| Structured I, LLC | 62 |
3 |
| Valmet AB | 535 |
3 |
| Paper Excellence Canada Holdings Corporation | 12 |
3 |
| GPCP IP Holdings LLC | 1545 |
3 |
| Seiko Epson Corporation | 20013 |
2 |
| Albany International Corp. | 230 |
2 |
| Durr Systems, Inc. | 106 |
2 |
| Other owners | 51 |