- 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 19/22 - Polyalkenes, e.g. polystyrene
Patent holdings for IPC class D21H 19/22
Total number of patents in this class: 280
10-year publication summary
|
19
|
19
|
20
|
20
|
14
|
24
|
40
|
31
|
39
|
18
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1660 |
28 |
| Dow Global Technologies LLC | 11029 |
16 |
| Kemira Oyj | 1262 |
15 |
| BASF SE | 21328 |
14 |
| WestRock MWV, LLC | 331 |
11 |
| Koehler Innovation & Technology GmbH | 56 |
8 |
| Société des Produits Nestlé S.A. | 10040 |
7 |
| Rohm and Haas Company | 2943 |
7 |
| Fiberlean Technologies Limited | 98 |
7 |
| Mondi AG | 222 |
7 |
| Oji Holdings Corporation | 803 |
7 |
| Smart Planet Technologies, Inc. | 37 |
7 |
| Kimberly-clark Worldwide, Inc. | 5259 |
6 |
| Cascades Sonoco Inc. | 26 |
5 |
| Kuraray Co., Ltd. | 3600 |
5 |
| UPM-Kymmene Corporation | 1004 |
5 |
| Huhtamaki Flexible Packaging Germany GmbH & Co. KG | 56 |
4 |
| JL Darling, LLC | 19 |
4 |
| The Procter & Gamble Company | 21880 |
3 |
| E. I. du Pont de Nemours and Company | 3464 |
3 |
| Other owners | 111 |