- 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 23/50 - Spraying or projecting
Patent holdings for IPC class D21H 23/50
Total number of patents in this class: 177
10-year publication summary
|
9
|
12
|
20
|
26
|
8
|
16
|
18
|
17
|
7
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1648 |
22 |
| Voith Patent GmbH | 2752 |
12 |
| WestRock MWV, LLC | 330 |
11 |
| Kemira Oyj | 1258 |
9 |
| Footprint International, LLC | 87 |
6 |
| Seiko Epson Corporation | 20248 |
5 |
| Guangzhou Huadu Lianhua Packing Material Co., Ltd. | 5 |
5 |
| Metso Paper, Inc. | 338 |
4 |
| BASF SE | 21303 |
3 |
| Xerox Corporation | 4394 |
3 |
| Kimberly-clark Worldwide, Inc. | 5301 |
3 |
| Altria Client Services LLC | 2435 |
3 |
| Daio Paper Corporation | 1410 |
3 |
| Ecolab USA Inc. | 5792 |
3 |
| MainTech Co., Ltd. | 65 |
3 |
| Solenis Technologies, L.P. | 304 |
3 |
| Alpla Werke Alwin Lehner GmbH & Co. KG | 425 |
2 |
| Ecochem Australia Pty Ltd | 42 |
2 |
| Eldorado Brasil Celulose S.A. | 4 |
2 |
| Fiberlean Technologies Limited | 98 |
2 |
| Other owners | 71 |