- All sections
- D - Textiles; paper
- D21H - Pulp compositions; preparation thereof not covered by subclasses , ; impregnating or coating of paper; treatment 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: 1194
10-year publication summary
|
88
|
72
|
115
|
129
|
122
|
128
|
154
|
103
|
91
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1504 |
337 |
| UPM-Kymmene Corporation | 868 |
68 |
| Fiberlean Technologies Limited | 116 |
66 |
| Oji Holdings Corporation | 660 |
61 |
| Nippon Paper Industries Co., Ltd. | 782 |
49 |
| Kemira Oyj | 1167 |
41 |
| GPCP IP Holdings LLC | 1733 |
32 |
| Daio Paper Corporation | 1407 |
31 |
| Borregaard AS | 108 |
16 |
| Mercer International Inc. | 30 |
12 |
| GranBio Intellectual Property Holdings, LLC | 105 |
11 |
| University of Maine System Board of Trustees | 261 |
10 |
| Cellutech AB | 24 |
9 |
| Domtar Paper Company, LLC | 119 |
9 |
| Billerudkorsnas AB | 91 |
8 |
| Innventia AB | 36 |
8 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
7 |
| International Paper Company | 857 |
7 |
| Solenis Technologies, L.P. | 306 |
7 |
| Suzano S.A. | 181 |
7 |
| Other owners | 398 |