- All sections
- D - Textiles; paper
- D21H - Pulp compositions; preparation thereof not covered by subclasses , ; impregnating or coating of paper; treatment 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
|
17
|
16
|
15
|
11
|
9
|
5
|
7
|
3
|
11
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1210 |
13 |
| Kimberly-clark Worldwide, Inc. | 5515 |
9 |
| Stora Enso Oyj | 1605 |
7 |
| Cascades Sonoco Inc. | 29 |
6 |
| BASF SE | 20432 |
5 |
| Voith Patent GmbH | 2736 |
5 |
| Footprint International, LLC | 76 |
5 |
| Ecolab USA Inc. | 5341 |
4 |
| Nalco Company | 596 |
4 |
| Daio Paper Corporation | 1390 |
3 |
| delfortgroup AG | 149 |
3 |
| Solenis Technologies, L.P. | 321 |
3 |
| WestRock MWV, LLC | 341 |
3 |
| Archroma IP GmbH | 461 |
2 |
| Japan Tobacco Inc. | 3488 |
2 |
| OrganoClick AB | 73 |
2 |
| UPM-Kymmene Corporation | 912 |
2 |
| HS Manufacturing Group, LLC | 6 |
2 |
| Cobank, Acb, AS Administrative Agent | 37 |
2 |
| The Procter & Gamble Company | 22146 |
1 |
| Other owners | 64 |