- 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 21/50 - Non-fibrous material added to the pulp, characterised by its function, form or propertiesPaper impregnating or coating material, characterised by its function, form or properties characterised by form
Patent holdings for IPC class D21H 21/50
Total number of patents in this class: 36
10-year publication summary
|
1
|
1
|
4
|
6
|
1
|
5
|
2
|
1
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Procter & Gamble Company | 22043 |
7 |
| Ecolab USA Inc. | 5496 |
4 |
| delfortgroup AG | 151 |
2 |
| Stora Enso Oyj | 1647 |
2 |
| University of Leeds | 285 |
2 |
| Graphic Packaging International, LLC | 1486 |
2 |
| LG Chem, Ltd. | 17635 |
1 |
| Philip Morris Products S.A. | 7661 |
1 |
| Seiko Epson Corporation | 19398 |
1 |
| Akzo Nobel Chemicals International B.V. | 436 |
1 |
| Billerud AB | 126 |
1 |
| Billerudkorsnas AB | 87 |
1 |
| Elastopoli Oy | 4 |
1 |
| Fiberlean Technologies Limited | 114 |
1 |
| Imerys USA, Inc. | 144 |
1 |
| Innventia AB | 35 |
1 |
| KT & G Corporation | 2624 |
1 |
| Pactiv LLC | 168 |
1 |
| SCA Hygiene Products AB | 655 |
1 |
| Wacker Chemie AG | 2111 |
1 |
| Other owners | 3 |