- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 1/56 - Deckle frame arrangements
Patent holdings for IPC class D21F 1/56
Total number of patents in this class: 21
10-year publication summary
|
1
|
1
|
2
|
2
|
1
|
2
|
3
|
2
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IBS of America | 26 |
10 |
| Voith Patent GmbH | 2762 |
5 |
| Mitsubishi Chemical Corporation | 4525 |
1 |
| Metso Paper, Inc. | 422 |
1 |
| Oji Holdings Corporation | 725 |
1 |
| Valmet, Inc. | 49 |
1 |
| Graphic Packaging International, LLC | 1486 |
1 |
| Graphic Packaging International Partners, LLC | 10 |
1 |
| Other owners | 0 |