- 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: 267
10-year publication summary
|
10
|
13
|
20
|
21
|
16
|
23
|
20
|
36
|
41
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WestRock MWV, LLC | 339 |
28 |
| Stora Enso Oyj | 1661 |
25 |
| Billerud AB | 135 |
10 |
| Oji Holdings Corporation | 735 |
8 |
| Société des Produits Nestlé S.A. | 9342 |
7 |
| Tetra Laval Holdings & Finance S.A. | 2175 |
7 |
| Papeltec Overseas, Inc. | 37 |
6 |
| Mondi AG | 176 |
5 |
| Nippon Paper Industries Co., Ltd. | 834 |
5 |
| Voith Patent GmbH | 2776 |
5 |
| Koehler Innovation & Technology GmbH | 48 |
5 |
| Hewlett-Packard Development Company, L.P. | 25671 |
4 |
| Neenah Gessner GmbH | 73 |
4 |
| Neenah, Inc. | 180 |
4 |
| Agfa-Gevaert | 290 |
3 |
| Billerudkorsnas AB | 88 |
3 |
| Cascades Sonoco Inc. | 29 |
3 |
| Hankuk Paper Mfg. Co., Ltd | 10 |
3 |
| Packaging and Crating Technologies, LLC | 11 |
3 |
| Swiss Krono Tec AG | 494 |
3 |
| Other owners | 126 |