- All sections
- D - Textilespaper
- D21H - Pulp compositionspreparation thereof not covered by subclasses , impregnating or coating of papertreatment of finished paper not covered by class or subclass paper not otherwise provided for
- D21H 11/22 - Chemically or biochemically modified fibres cationised
Patent holdings for IPC class D21H 11/22
Total number of patents in this class: 13
10-year publication summary
|
0
|
3
|
1
|
3
|
0
|
0
|
2
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V. | 1770 |
2 |
| Nippon Paper Industries Co., Ltd. | 829 |
2 |
| Evonik Degussa GmbH | 1534 |
1 |
| DIC Corporation | 3782 |
1 |
| Kemira Oyj | 1207 |
1 |
| Kyoto University | 2802 |
1 |
| Nanopaper, LLC | 15 |
1 |
| Northeast Forestry University | 26 |
1 |
| Oji Holdings Corporation | 717 |
1 |
| Södra Skogsägarna ekonomisk förening | 74 |
1 |
| UPM-Kymmene Corporation | 937 |
1 |
| Other owners | 0 |