- 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 19/82 - Paper comprising more than one coating superposed
Patent holdings for IPC class D21H 19/82
Total number of patents in this class: 650
10-year publication summary
|
32
|
25
|
33
|
47
|
49
|
58
|
68
|
68
|
88
|
52
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WestRock MWV, LLC | 336 |
62 |
| Stora Enso Oyj | 1648 |
51 |
| Nippon Paper Industries Co., Ltd. | 833 |
32 |
| Société des Produits Nestlé S.A. | 9296 |
20 |
| Billerud AB | 126 |
18 |
| UPM-Kymmene Corporation | 936 |
15 |
| Kemira Oyj | 1207 |
14 |
| Oji Holdings Corporation | 724 |
14 |
| Tetra Laval Holdings & Finance S.A. | 2154 |
14 |
| Billerudkorsnas AB | 87 |
11 |
| Koehler Innovation & Technology GmbH | 46 |
11 |
| The Procter & Gamble Company | 22045 |
10 |
| BASF SE | 20945 |
9 |
| Mitsubishi HiTec Paper Europe GmbH | 71 |
9 |
| Omya International AG | 771 |
9 |
| Hewlett-Packard Development Company, L.P. | 25850 |
7 |
| Swiss Krono Tec AG | 489 |
7 |
| Voith Patent GmbH | 2764 |
7 |
| Dow Global Technologies LLC | 10371 |
6 |
| PAPACKS SALES GmbH | 51 |
6 |
| Other owners | 318 |