- 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: 294
10-year publication summary
|
13
|
21
|
24
|
19
|
26
|
24
|
41
|
47
|
36
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WestRock MWV, LLC | 332 |
28 |
| Stora Enso Oyj | 1632 |
27 |
| Billerud AB | 146 |
11 |
| Oji Holdings Corporation | 780 |
9 |
| Société des Produits Nestlé S.A. | 9987 |
8 |
| Tetra Laval Holdings & Finance S.A. | 2192 |
8 |
| Mondi AG | 203 |
7 |
| Papeltec Overseas, Inc. | 42 |
6 |
| Neenah Gessner GmbH | 92 |
5 |
| Nippon Paper Industries Co., Ltd. | 840 |
5 |
| Voith Patent GmbH | 2777 |
5 |
| Koehler Innovation & Technology GmbH | 53 |
5 |
| Conopco, Inc. | 4981 |
4 |
| Hewlett-Packard Development Company, L.P. | 25342 |
4 |
| Neenah, Inc. | 188 |
4 |
| Unilever IP Holdings B.V. | 2760 |
4 |
| Unilever Global IP Limited | 2147 |
4 |
| Sappi Papier Holding GmbH | 6 |
4 |
| Agfa-Gevaert | 296 |
3 |
| Billerudkorsnas AB | 88 |
3 |
| Other owners | 140 |