- 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 17/26 - Ethers thereof
Patent holdings for IPC class D21H 17/26
Total number of patents in this class: 134
10-year publication summary
|
3
|
7
|
9
|
10
|
4
|
14
|
12
|
11
|
10
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1207 |
17 |
| Stora Enso Oyj | 1648 |
11 |
| Soane Materials LLC | 22 |
7 |
| Nippon Paper Industries Co., Ltd. | 833 |
6 |
| Omya International AG | 771 |
6 |
| Solenis Technologies, L.P. | 335 |
5 |
| Nippon Paper Papylia Co., Ltd. | 39 |
4 |
| Dow Global Technologies LLC | 10371 |
3 |
| Domtar Paper Company, LLC | 121 |
3 |
| Ecolab USA Inc. | 5505 |
3 |
| UPM-Kymmene Corporation | 936 |
3 |
| Essity Hygiene and Health Aktiebolag | 2045 |
3 |
| Daio Paper Corporation | 1379 |
2 |
| delfortgroup AG | 151 |
2 |
| North Carolina State University | 1564 |
2 |
| Oji Holdings Corporation | 724 |
2 |
| OrganoClick AB | 72 |
2 |
| Pratt Corrugated Holdings, Inc. | 288 |
2 |
| Saint-Gobain Adfors | 118 |
2 |
| Evertree | 79 |
2 |
| Other owners | 47 |