- All sections
- D - Textiles; paper
- D21H - Pulp compositions; preparation thereof not covered by subclasses , ; impregnating or coating of paper; treatment 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: 161
10-year publication summary
|
4
|
14
|
9
|
12
|
20
|
25
|
8
|
15
|
17
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1504 |
25 |
| WestRock MWV, LLC | 335 |
11 |
| Kemira Oyj | 1167 |
10 |
| Voith Patent GmbH | 2727 |
7 |
| Seiko Epson Corporation | 18724 |
5 |
| Metso Paper, Inc. | 528 |
5 |
| Guangzhou Huadu Lianhua Packing Material Co., Ltd. | 5 |
5 |
| Kimberly-clark Worldwide, Inc. | 5854 |
3 |
| Altria Client Services LLC | 1866 |
3 |
| Daio Paper Corporation | 1407 |
3 |
| Ecolab USA Inc. | 5190 |
3 |
| MainTech Co., Ltd. | 58 |
3 |
| BASF SE | 19740 |
2 |
| Xerox Corporation | 7503 |
2 |
| Ecochem Australia Pty Ltd | 39 |
2 |
| Eldorado Brasil Celulose S.A. | 5 |
2 |
| IBS Austria GmbH | 2 |
2 |
| Kadant Lamort | 18 |
2 |
| Mondi AG | 129 |
2 |
| OrganoClick AB | 70 |
2 |
| Other owners | 62 |