- 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 21/16 - Sizing or water-repelling agents
Patent holdings for IPC class D21H 21/16
Total number of patents in this class: 1233
10-year publication summary
|
76
|
68
|
60
|
75
|
80
|
103
|
122
|
141
|
127
|
77
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1258 |
114 |
| Stora Enso Oyj | 1648 |
82 |
| Daikin Industries, Ltd. | 10478 |
44 |
| BASF SE | 21303 |
31 |
| WestRock MWV, LLC | 330 |
28 |
| Dow Global Technologies LLC | 10930 |
20 |
| Ecolab USA Inc. | 5792 |
20 |
| Footprint International, LLC | 87 |
20 |
| Billerud AB | 162 |
18 |
| Mondi AG | 210 |
18 |
| Solenis Technologies, L.P. | 304 |
18 |
| Hewlett-Packard Development Company, L.P. | 25216 |
14 |
| Kuraray Co., Ltd. | 3589 |
14 |
| Archroma IP GmbH | 462 |
13 |
| Chemstone, Inc. | 26 |
13 |
| International Paper Company | 601 |
11 |
| UPM-Kymmene Corporation | 993 |
11 |
| Philip Morris Products S.A. | 8157 |
10 |
| Lamberti SpA | 258 |
10 |
| Nippon Paper Industries Co., Ltd. | 848 |
10 |
| Other owners | 714 |