- 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 17/25 - Cellulose
Patent holdings for IPC class D21H 17/25
Total number of patents in this class: 242
10-year publication summary
|
23
|
24
|
31
|
21
|
16
|
8
|
7
|
8
|
14
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1264 |
28 |
| Stora Enso Oyj | 1657 |
19 |
| University of Maine System Board of Trustees | 284 |
10 |
| UPM-Kymmene Corporation | 1005 |
10 |
| Cellucomp Limited | 38 |
8 |
| Fiberlean Technologies Limited | 98 |
7 |
| Solenis Technologies, L.P. | 304 |
7 |
| Mercer International Inc. | 30 |
7 |
| Ecolab USA Inc. | 5813 |
6 |
| Wetend Technologies Ltd | 8 |
6 |
| CheM&P GmbH & Co. KG | 4 |
4 |
| The Procter & Gamble Company | 21852 |
3 |
| Philip Morris Products S.A. | 8232 |
3 |
| Kimberly-clark Worldwide, Inc. | 5261 |
3 |
| Centre National de La Recherche Scientifique | 11059 |
3 |
| FPInnovations | 225 |
3 |
| Institut Polytechnique de Grenoble | 428 |
3 |
| KT & G Corporation | 3152 |
3 |
| The Penn State Research Foundation | 1622 |
3 |
| Kombucha Biomaterials LLC | 4 |
3 |
| Other owners | 103 |