- 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: 738
10-year publication summary
|
27
|
37
|
53
|
58
|
71
|
77
|
80
|
96
|
78
|
62
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WestRock MWV, LLC | 331 |
66 |
| Stora Enso Oyj | 1660 |
55 |
| Nippon Paper Industries Co., Ltd. | 854 |
35 |
| Société des Produits Nestlé S.A. | 10040 |
26 |
| Billerud AB | 164 |
22 |
| Tetra Laval Holdings & Finance S.A. | 2254 |
18 |
| UPM-Kymmene Corporation | 1004 |
17 |
| Kemira Oyj | 1262 |
16 |
| Oji Holdings Corporation | 803 |
15 |
| Koehler Innovation & Technology GmbH | 56 |
13 |
| Billerudkorsnas AB | 88 |
11 |
| Omya International AG | 779 |
10 |
| The Procter & Gamble Company | 21880 |
9 |
| BASF SE | 21328 |
9 |
| Mitsubishi HiTec Paper Europe GmbH | 66 |
8 |
| Dow Global Technologies LLC | 11029 |
7 |
| Neenah Gessner GmbH | 95 |
7 |
| Swiss Krono Tec AG | 515 |
7 |
| Voith Patent GmbH | 2742 |
7 |
| Toppan Holdings Inc. | 943 |
7 |
| Other owners | 373 |