- 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 19/28 - Polyesters
Patent holdings for IPC class D21H 19/28
Total number of patents in this class: 120
10-year publication summary
|
6
|
8
|
7
|
4
|
2
|
8
|
12
|
13
|
16
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1647 |
24 |
| BASF SE | 20940 |
7 |
| Kaneka Corporation | 4534 |
6 |
| Lamberti SpA | 255 |
4 |
| WestRock MWV, LLC | 336 |
4 |
| Huhtamaki Flexible Packaging Germany GmbH & Co. KG | 44 |
3 |
| Huhtamaki Molded Fiber Technology B.V. | 58 |
3 |
| Nippon Paper Industries Co., Ltd. | 832 |
3 |
| Plantics B.V. | 13 |
3 |
| Beijing PhaBuilder Biotechnology Co., Ltd. | 29 |
3 |
| Société des Produits Nestlé S.A. | 9289 |
2 |
| Kemira Oyj | 1207 |
2 |
| Mondi AG | 170 |
2 |
| Neenah Gessner GmbH | 69 |
2 |
| Oji Holdings Corporation | 725 |
2 |
| Neenah, Inc. | 180 |
2 |
| Brightplus Oy | 17 |
2 |
| Fiberdom Oy | 15 |
2 |
| MM Kotkamills Oy | 2 |
2 |
| Danimer Ipco, LLC | 93 |
2 |
| Other owners | 40 |