- 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 11/18 - Highly hydrated, swollen or fibrillatable fibres
Patent holdings for IPC class D21H 11/18
Total number of patents in this class: 1269
10-year publication summary
|
72
|
114
|
128
|
119
|
127
|
154
|
101
|
105
|
73
|
42
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1643 |
359 |
| Fiberlean Technologies Limited | 114 |
68 |
| UPM-Kymmene Corporation | 938 |
68 |
| Oji Holdings Corporation | 724 |
62 |
| Nippon Paper Industries Co., Ltd. | 830 |
46 |
| Kemira Oyj | 1205 |
38 |
| Daio Paper Corporation | 1380 |
29 |
| GPCP IP Holdings LLC | 1631 |
23 |
| Borregaard AS | 125 |
16 |
| GranBio Intellectual Property Holdings, LLC | 120 |
14 |
| Domtar Paper Company, LLC | 121 |
12 |
| Mercer International Inc. | 30 |
12 |
| Kimberly-clark Worldwide, Inc. | 5498 |
11 |
| University of Maine System Board of Trustees | 284 |
10 |
| Cellutech AB | 22 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2675 |
8 |
| Innventia AB | 35 |
8 |
| Soane Materials LLC | 21 |
8 |
| Billerudkorsnas AB | 88 |
7 |
| International Paper Company | 786 |
7 |
| Other owners | 454 |