- 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: 70
10-year publication summary
|
5
|
3
|
2
|
6
|
6
|
8
|
5
|
3
|
7
|
5
|
| 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 |
3 |
| South China University of Technology | 1904 |
3 |
| Ecolab USA Inc. | 5796 |
2 |
| Kemira Oyj | 1258 |
2 |
| Nanyang Technological University | 2206 |
2 |
| Stora Enso Oyj | 1653 |
2 |
| BASF SE | 21303 |
1 |
| Honeywell International Inc. | 12778 |
1 |
| Centre National de La Recherche Scientifique | 11023 |
1 |
| Hewlett-Packard Development Company, L.P. | 25184 |
1 |
| Archroma IP GmbH | 462 |
1 |
| Billerudkorsnas AB | 88 |
1 |
| Bromine Compounds Ltd. | 185 |
1 |
| Centre Technique du Papier | 18 |
1 |
| City University of Hong Kong | 953 |
1 |
| Daio Paper Corporation | 1408 |
1 |
| Donghua University | 83 |
1 |
| Innovatech Engineering, LLC | 6 |
1 |
| Isis Innovation Limited | 448 |
1 |
| Jiangsu University | 1166 |
1 |
| Other owners | 42 |