- 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 11/02 - Chemical or chemomechanical pulp
Patent holdings for IPC class D21H 11/02
Total number of patents in this class: 156
10-year publication summary
|
16
|
11
|
14
|
13
|
14
|
15
|
14
|
18
|
22
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1634 |
20 |
| Billerud AB | 125 |
12 |
| Billerudkorsnas AB | 88 |
8 |
| Kimberly-clark Worldwide, Inc. | 5504 |
6 |
| Mercer International Inc. | 30 |
5 |
| GranBio Intellectual Property Holdings, LLC | 119 |
5 |
| Domtar Paper Company, LLC | 121 |
4 |
| Metsa Board Oyj | 53 |
4 |
| Kanbol, Inc. | 9 |
4 |
| Circ, Inc. | 36 |
4 |
| FPInnovations | 245 |
3 |
| Kemira Oyj | 1207 |
3 |
| Nippon Paper Industries Co., Ltd. | 829 |
3 |
| Nippon Paper Papylia Co., Ltd. | 39 |
3 |
| Oji Holdings Corporation | 717 |
3 |
| Suncoal Industries GmbH | 75 |
3 |
| Hewlett-Packard Development Company, L.P. | 25903 |
2 |
| API Intellectual Property Holdings, LLC | 77 |
2 |
| Compagnie Industrielle de La Matiere Vegetale - Cimv | 27 |
2 |
| Fibria Celulose S.A. | 15 |
2 |
| Other owners | 58 |