- 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 19/54 - Starch
Patent holdings for IPC class D21H 19/54
Total number of patents in this class: 379
10-year publication summary
|
39
|
26
|
22
|
33
|
20
|
17
|
25
|
26
|
26
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1231 |
27 |
| Stora Enso Oyj | 1648 |
18 |
| BASF SE | 21134 |
17 |
| WestRock MWV, LLC | 335 |
16 |
| Billerud AB | 144 |
15 |
| Roquette Freres | 1039 |
12 |
| Hewlett-Packard Development Company, L.P. | 25454 |
11 |
| Omya International AG | 768 |
10 |
| delfortgroup AG | 151 |
9 |
| Henkel AG & Co. KGaA | 10691 |
8 |
| Cargill, Incorporated | 2948 |
8 |
| Domtar Paper Company, LLC | 120 |
8 |
| Ecolab USA Inc. | 5663 |
7 |
| Mondi AG | 192 |
7 |
| Essity Operations France | 41 |
7 |
| Nippon Paper Industries Co., Ltd. | 833 |
6 |
| Dow Global Technologies LLC | 10701 |
5 |
| International Paper Company | 622 |
5 |
| Novamont S.p.A. | 367 |
5 |
| Solenis Technologies, L.P. | 330 |
5 |
| Other owners | 173 |