- 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 25/02 - Chemical or biochemical treatment
Patent holdings for IPC class D21H 25/02
Total number of patents in this class: 65
10-year publication summary
|
5
|
5
|
3
|
2
|
6
|
6
|
8
|
5
|
2
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kimberly-clark Worldwide, Inc. | 5449 |
3 |
| South China University of Technology | 1792 |
3 |
| Ecolab USA Inc. | 5507 |
2 |
| BASF SE | 20967 |
1 |
| Honeywell International Inc. | 13547 |
1 |
| Centre National de La Recherche Scientifique | 10476 |
1 |
| Hewlett-Packard Development Company, L.P. | 25841 |
1 |
| Archroma IP GmbH | 461 |
1 |
| Billerudkorsnas AB | 87 |
1 |
| BP Corporation North America Inc. | 745 |
1 |
| Bromine Compounds Ltd. | 188 |
1 |
| Centre Technique du Papier | 18 |
1 |
| City University of Hong Kong | 856 |
1 |
| Daio Paper Corporation | 1377 |
1 |
| Donghua University | 71 |
1 |
| Innovatech Engineering, LLC | 6 |
1 |
| Isis Innovation Limited | 489 |
1 |
| Jilin University | 270 |
1 |
| Kaindl Decor GmbH | 3 |
1 |
| Kemira Oyj | 1208 |
1 |
| Other owners | 40 |