- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 3/00 - Press section of machines for making continuous webs of paper
Patent holdings for IPC class D21F 3/00
Total number of patents in this class: 91
10-year publication summary
|
8
|
4
|
3
|
4
|
2
|
6
|
5
|
2
|
0
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ichikawa Co., Ltd. | 104 |
14 |
| Metso Paper, Inc. | 424 |
9 |
| Yamauchi Corporation | 96 |
9 |
| Albany International Corp. | 255 |
7 |
| Valmet AB | 503 |
6 |
| Voith Patent GmbH | 2756 |
6 |
| Stora Enso Oyj | 1634 |
4 |
| GPCP IP Holdings LLC | 1639 |
4 |
| Nalco Company | 564 |
3 |
| Seiko Epson Corporation | 19319 |
2 |
| Fiberlean Technologies Limited | 114 |
2 |
| Structured I, LLC | 58 |
2 |
| Valmet Technologies, Inc. | 147 |
2 |
| The Procter & Gamble Company | 22037 |
1 |
| Honeywell International Inc. | 13525 |
1 |
| Kimberly-clark Worldwide, Inc. | 5504 |
1 |
| Georgia-Pacific Consumer Products LP | 111 |
1 |
| Huyck. Wangner Austria GmbH | 1 |
1 |
| International Paper Company | 791 |
1 |
| Lec, Inc. | 24 |
1 |
| Other owners | 14 |