- 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 19/58 - Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
Patent holdings for IPC class D21H 19/58
Total number of patents in this class: 321
10-year publication summary
|
19
|
24
|
21
|
23
|
24
|
18
|
26
|
22
|
25
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WestRock MWV, LLC | 336 |
31 |
| BASF SE | 20940 |
29 |
| Kemira Oyj | 1207 |
25 |
| Coatex S.A.S. | 228 |
12 |
| Billerud AB | 126 |
10 |
| Stora Enso Oyj | 1647 |
10 |
| Dow Global Technologies LLC | 10360 |
9 |
| Rohm and Haas Company | 2880 |
6 |
| Nippon Paper Industries Co., Ltd. | 832 |
6 |
| COATEX une société par actions simplifiée | 165 |
5 |
| Packaging and Crating Technologies, LLC | 11 |
5 |
| Koehler Innovation & Technology GmbH | 46 |
5 |
| Hewlett-Packard Development Company, L.P. | 25864 |
4 |
| Billerudkorsnas AB | 87 |
4 |
| Oji Holdings Corporation | 725 |
4 |
| Sun Chemical Corporation | 839 |
4 |
| Westcott Materials, LLC | 6 |
4 |
| Archroma IP GmbH | 461 |
3 |
| Crane & Co., Inc. | 119 |
3 |
| delfortgroup AG | 151 |
3 |
| Other owners | 139 |