- 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 19/84 - Paper comprising more than one coating on both sides of the substrate
Patent holdings for IPC class D21H 19/84
Total number of patents in this class: 323
10-year publication summary
|
13
|
21
|
24
|
19
|
26
|
25
|
41
|
47
|
37
|
38
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1660 |
29 |
| WestRock MWV, LLC | 331 |
28 |
| Billerud AB | 169 |
14 |
| Mondi AG | 234 |
10 |
| Oji Holdings Corporation | 812 |
10 |
| Société des Produits Nestlé S.A. | 10058 |
8 |
| Tetra Laval Holdings & Finance S.A. | 2277 |
8 |
| Papeltec Overseas, Inc. | 43 |
6 |
| Neenah Gessner GmbH | 98 |
5 |
| Nippon Paper Industries Co., Ltd. | 857 |
5 |
| UPM-Kymmene Corporation | 1004 |
5 |
| Voith Patent GmbH | 2742 |
5 |
| Koehler Innovation & Technology GmbH | 56 |
5 |
| Sappi Papier Holding GmbH | 7 |
5 |
| Conopco, Inc. | 5140 |
4 |
| Hewlett-Packard Development Company, L.P. | 25103 |
4 |
| Neenah, Inc. | 203 |
4 |
| Unilever IP Holdings B.V. | 2765 |
4 |
| Unilever Global IP Limited | 2212 |
4 |
| Agfa-Gevaert | 296 |
3 |
| Other owners | 157 |