- 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 23/48 - Curtain coaters
Patent holdings for IPC class D21H 23/48
Total number of patents in this class: 127
10-year publication summary
|
3
|
4
|
7
|
11
|
5
|
8
|
9
|
6
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2777 |
40 |
| WestRock MWV, LLC | 332 |
12 |
| Nippon Paper Industries Co., Ltd. | 840 |
10 |
| Stora Enso Oyj | 1632 |
10 |
| Billerudkorsnas Skog & Industri Aktiebolag | 8 |
5 |
| Fiberlean Technologies Limited | 104 |
5 |
| Johns Manville | 925 |
5 |
| Jujo Thermal Oy | 16 |
4 |
| Valmet Technologies, Inc. | 137 |
4 |
| Metso Paper, Inc. | 359 |
3 |
| Dow Global Technologies LLC | 10798 |
2 |
| Andritz Kusters GmbH | 53 |
2 |
| Mondi AG | 203 |
2 |
| Kotkamills Group Oyj | 2 |
2 |
| Koehler Innovation & Technology GmbH | 53 |
2 |
| The Procter & Gamble Company | 21893 |
1 |
| Arjowiggins Papiers Couches | 8 |
1 |
| Cargill, Incorporated | 2945 |
1 |
| COATEX une société par actions simplifiée | 172 |
1 |
| Daio Paper Corporation | 1408 |
1 |
| Other owners | 14 |