- 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 23/22 - Addition to the formed paper
Patent holdings for IPC class D21H 23/22
Total number of patents in this class: 147
10-year publication summary
|
16
|
15
|
11
|
9
|
5
|
7
|
3
|
11
|
9
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1265 |
13 |
| Stora Enso Oyj | 1662 |
9 |
| Kimberly-clark Worldwide, Inc. | 5254 |
7 |
| Cascades Sonoco Inc. | 26 |
6 |
| Footprint International, LLC | 86 |
6 |
| Ecolab USA Inc. | 5837 |
5 |
| BASF SE | 21318 |
4 |
| Voith Patent GmbH | 2743 |
4 |
| Daio Paper Corporation | 1425 |
3 |
| delfortgroup AG | 159 |
3 |
| Nalco Company | 530 |
3 |
| Solenis Technologies, L.P. | 304 |
3 |
| WestRock MWV, LLC | 332 |
3 |
| Archroma IP GmbH | 461 |
2 |
| Brown LLC | 82 |
2 |
| Japan Tobacco Inc. | 3576 |
2 |
| OrganoClick AB | 70 |
2 |
| UPM-Kymmene Corporation | 1005 |
2 |
| Cobank, Acb, AS Administrative Agent | 35 |
2 |
| The Procter & Gamble Company | 21870 |
1 |
| Other owners | 65 |