- 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: 1285
10-year publication summary
|
91
|
103
|
107
|
108
|
127
|
87
|
88
|
72
|
61
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1646 |
346 |
| UPM-Kymmene Corporation | 965 |
68 |
| Oji Holdings Corporation | 762 |
65 |
| Fiberlean Technologies Limited | 105 |
62 |
| Nippon Paper Industries Co., Ltd. | 836 |
48 |
| Kemira Oyj | 1231 |
39 |
| Daio Paper Corporation | 1393 |
29 |
| GPCP IP Holdings LLC | 1576 |
23 |
| Borregaard AS | 127 |
16 |
| GranBio Intellectual Property Holdings, LLC | 127 |
16 |
| Kimberly-clark Worldwide, Inc. | 5312 |
13 |
| Domtar Paper Company, LLC | 120 |
12 |
| Mercer International Inc. | 30 |
12 |
| University of Maine System Board of Trustees | 284 |
10 |
| Soane Materials LLC | 25 |
10 |
| Asahi Kasei Kabushiki Kaisha | 2750 |
8 |
| Centre National de La Recherche Scientifique | 10830 |
7 |
| Billerudkorsnas AB | 88 |
7 |
| Cellutech AB | 19 |
7 |
| Innventia AB | 33 |
7 |
| Other owners | 480 |