- 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: 1250
10-year publication summary
|
72
|
115
|
129
|
122
|
128
|
154
|
103
|
103
|
72
|
28
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1588 |
351 |
| Fiberlean Technologies Limited | 114 |
68 |
| UPM-Kymmene Corporation | 927 |
68 |
| Oji Holdings Corporation | 711 |
62 |
| Nippon Paper Industries Co., Ltd. | 819 |
46 |
| Kemira Oyj | 1182 |
39 |
| Daio Paper Corporation | 1385 |
27 |
| GPCP IP Holdings LLC | 1650 |
23 |
| Borregaard AS | 124 |
16 |
| GranBio Intellectual Property Holdings, LLC | 119 |
14 |
| Mercer International Inc. | 30 |
12 |
| Kimberly-clark Worldwide, Inc. | 5490 |
11 |
| Domtar Paper Company, LLC | 119 |
11 |
| University of Maine System Board of Trustees | 277 |
10 |
| Cellutech AB | 22 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2620 |
8 |
| Innventia AB | 35 |
8 |
| Soane Materials LLC | 20 |
8 |
| Billerudkorsnas AB | 88 |
7 |
| International Paper Company | 794 |
7 |
| Other owners | 445 |