- 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: 129
10-year publication summary
|
6
|
8
|
7
|
4
|
2
|
8
|
12
|
13
|
16
|
23
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1665 |
24 |
| BASF SE | 21137 |
7 |
| Kaneka Corporation | 4608 |
6 |
| Lamberti SpA | 254 |
4 |
| WestRock MWV, LLC | 340 |
4 |
| Société des Produits Nestlé S.A. | 9910 |
3 |
| Huhtamaki Flexible Packaging Germany GmbH & Co. KG | 49 |
3 |
| Huhtamaki Molded Fiber Technology B.V. | 61 |
3 |
| Nippon Paper Industries Co., Ltd. | 832 |
3 |
| Plantics B.V. | 13 |
3 |
| Beijing PhaBuilder Biotechnology Co., Ltd. | 34 |
3 |
| Conopco, Inc. | 4923 |
2 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1394 |
2 |
| Kemira Oyj | 1228 |
2 |
| Mondi AG | 186 |
2 |
| Neenah Gessner GmbH | 73 |
2 |
| Oji Holdings Corporation | 748 |
2 |
| Neenah, Inc. | 182 |
2 |
| Brightplus Oy | 18 |
2 |
| Unilever IP Holdings B.V. | 3016 |
2 |
| Other owners | 48 |