- 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 23/56 - Rolls
Patent holdings for IPC class D21H 23/56
Total number of patents in this class: 141
10-year publication summary
6
|
13
|
5
|
8
|
12
|
13
|
13
|
8
|
11
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Voith Patent GmbH | 2727 |
14 |
Kimberly-clark Worldwide, Inc. | 5854 |
12 |
WestRock MWV, LLC | 335 |
10 |
Stora Enso Oyj | 1504 |
6 |
Ecolab USA Inc. | 5190 |
5 |
International Paper Company | 857 |
4 |
Guangzhou Huadu Lianhua Packing Material Co., Ltd. | 5 |
4 |
3m Innovative Properties Company | 18406 |
3 |
Daio Paper Corporation | 1407 |
3 |
Kemira Oyj | 1167 |
3 |
Metso Paper, Inc. | 528 |
3 |
Munksjo Oyj | 10 |
3 |
Vits Technology GmbH | 19 |
3 |
LG Electronics Inc. | 69257 |
2 |
Hewlett-Packard Development Company, L.P. | 28538 |
2 |
Domtar Paper Company, LLC | 119 |
2 |
Eldorado Brasil Celulose S.A. | 5 |
2 |
FP-Pigments Oy | 33 |
2 |
Hansol Paper Co., Ltd. | 23 |
2 |
Knu-industry Cooperation Foundation | 122 |
2 |
Other owners | 54 |