- 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 21/54 - Additives of definite length or shape being spherical, e.g. microcapsules or beads
Patent holdings for IPC class D21H 21/54
Total number of patents in this class: 92
10-year publication summary
|
7
|
4
|
11
|
6
|
7
|
4
|
6
|
6
|
2
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Henkel AG & Co. KGaA | 10129 |
15 |
| Stora Enso Oyj | 1504 |
9 |
| Akzo Nobel N.V. | 240 |
6 |
| 3m Innovative Properties Company | 18406 |
3 |
| Eka Chemicals AB | 44 |
3 |
| International Paper Company | 857 |
3 |
| Kemira Oyj | 1167 |
3 |
| Outlier Solutions, LLC | 3 |
3 |
| Philip Morris Products S.A. | 6751 |
2 |
| Kimberly-clark Worldwide, Inc. | 5854 |
2 |
| Dow Global Technologies Inc. | 1055 |
2 |
| Daio Paper Corporation | 1407 |
2 |
| Novamont S.p.A. | 354 |
2 |
| OMNOVA Solutions Inc. | 130 |
2 |
| Topchim N.V. | 13 |
2 |
| UPM-Kymmene Corporation | 868 |
2 |
| Wacker Chemical Corporation | 34 |
2 |
| BASF SE | 19740 |
1 |
| Merck Patent GmbH | 5909 |
1 |
| Centre National de La Recherche Scientifique | 9632 |
1 |
| Other owners | 26 |