- 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 19/54 - Starch
Patent holdings for IPC class D21H 19/54
Total number of patents in this class: 334
10-year publication summary
|
16
|
25
|
45
|
28
|
25
|
37
|
21
|
20
|
25
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1167 |
23 |
| BASF SE | 19740 |
17 |
| WestRock MWV, LLC | 335 |
17 |
| Stora Enso Oyj | 1504 |
15 |
| Roquette Freres | 1002 |
13 |
| Hewlett-Packard Development Company, L.P. | 28538 |
11 |
| Omya International AG | 816 |
10 |
| Henkel AG & Co. KGaA | 10129 |
8 |
| Cargill, Incorporated | 2835 |
8 |
| Domtar Paper Company, LLC | 119 |
8 |
| delfortgroup AG | 147 |
7 |
| Essity Operations France | 51 |
7 |
| Ecolab USA Inc. | 5190 |
6 |
| International Paper Company | 857 |
6 |
| Nippon Paper Industries Co., Ltd. | 782 |
6 |
| Dow Global Technologies LLC | 10147 |
5 |
| Novamont S.p.A. | 354 |
5 |
| Voith Patent GmbH | 2727 |
5 |
| Cooperatie Avebe U.A. | 76 |
4 |
| MeadWestvaco Corporation | 370 |
4 |
| Other owners | 149 |