- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 1/80 - Pulp catching, de-watering, or recoveringRe-use of pulp-water using endless screening belts
Patent holdings for IPC class D21F 1/80
Total number of patents in this class: 68
10-year publication summary
|
3
|
5
|
8
|
3
|
5
|
3
|
7
|
5
|
4
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kimberly-clark Worldwide, Inc. | 5308 |
14 |
| Stora Enso Oyj | 1653 |
10 |
| IBS of America | 26 |
7 |
| Voith Patent GmbH | 2749 |
5 |
| Seiko Epson Corporation | 20256 |
4 |
| Andritz Technology & Asset Management GmbH | 2 |
2 |
| Buckman Laboratories International, Inc. | 240 |
2 |
| Metso Paper, Inc. | 338 |
2 |
| Mondi AG | 211 |
2 |
| MDF Recovery Limited | 4 |
2 |
| Albany International Corp. | 232 |
1 |
| AstenJohnson, Inc. | 121 |
1 |
| Eastman Chemical Company | 2087 |
1 |
| Ichikawa Co., Ltd. | 87 |
1 |
| Kadant Canada Corp. | 16 |
1 |
| Metso Paper Sweden Aktiebolag | 44 |
1 |
| Oji Holdings Corporation | 797 |
1 |
| Ovivo Inc. | 57 |
1 |
| Paperchine Inc. | 8 |
1 |
| Services Techniques HDS | 1 |
1 |
| Other owners | 8 |