- 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 11/08 - Mechanical or thermomechanical pulp
Patent holdings for IPC class D21H 11/08
Total number of patents in this class: 151
10-year publication summary
|
15
|
9
|
8
|
21
|
11
|
11
|
22
|
8
|
14
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1653 |
18 |
| Billerudkorsnas AB | 88 |
7 |
| Metsa Board Oyj | 52 |
7 |
| GranBio Intellectual Property Holdings, LLC | 125 |
7 |
| Domtar Paper Company, LLC | 124 |
6 |
| Billerud AB | 162 |
5 |
| Kemira Oyj | 1258 |
5 |
| WestRock MWV, LLC | 330 |
5 |
| GPCP IP Holdings LLC | 1529 |
5 |
| Mercer International Inc. | 30 |
5 |
| IFG Technologies, LLC | 11 |
4 |
| The Procter & Gamble Company | 21855 |
3 |
| Hewlett-Packard Development Company, L.P. | 25184 |
3 |
| Fiberlean Technologies Limited | 98 |
3 |
| FPInnovations | 225 |
3 |
| Nippon Paper Industries Co., Ltd. | 849 |
3 |
| UPM-Kymmene Corporation | 994 |
3 |
| Releaf Paper France SAS | 3 |
3 |
| Kimberly-clark Worldwide, Inc. | 5308 |
2 |
| Rohm Co., Ltd. | 6826 |
2 |
| Other owners | 52 |