- 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: 700
10-year publication summary
|
25
|
33
|
47
|
49
|
58
|
68
|
69
|
88
|
70
|
23
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WestRock MWV, LLC | 332 |
66 |
| Stora Enso Oyj | 1633 |
48 |
| Nippon Paper Industries Co., Ltd. | 841 |
34 |
| Société des Produits Nestlé S.A. | 9941 |
24 |
| Billerud AB | 146 |
20 |
| Tetra Laval Holdings & Finance S.A. | 2186 |
16 |
| UPM-Kymmene Corporation | 972 |
16 |
| Kemira Oyj | 1232 |
15 |
| Oji Holdings Corporation | 771 |
15 |
| Koehler Innovation & Technology GmbH | 53 |
13 |
| Billerudkorsnas AB | 88 |
11 |
| The Procter & Gamble Company | 21900 |
9 |
| BASF SE | 21129 |
9 |
| Omya International AG | 771 |
9 |
| Dow Global Technologies LLC | 10762 |
8 |
| Mitsubishi HiTec Paper Europe GmbH | 69 |
8 |
| Neenah Gessner GmbH | 87 |
7 |
| Swiss Krono Tec AG | 505 |
7 |
| Voith Patent GmbH | 2773 |
7 |
| Toppan Holdings Inc. | 817 |
7 |
| Other owners | 351 |