- 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 27/22 - Structures being applied on the surface by special manufacturing processes, e.g. in presses
Patent holdings for IPC class D21H 27/22
Total number of patents in this class: 33
10-year publication summary
|
5
|
6
|
1
|
1
|
1
|
3
|
2
|
2
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WestRock MWV, LLC | 331 |
4 |
| Kimberly-clark Worldwide, Inc. | 5255 |
3 |
| Ahlstrom-munksjo Oyj | 155 |
3 |
| First Quality Tissue, LLC | 166 |
2 |
| Kemira Oyj | 1264 |
2 |
| Knauf Gips KG | 643 |
2 |
| Mudanjiang Hengfeng Paper Co.,Ltd | 5 |
2 |
| Guangzhou Huadu Lianhua Packing Material Co., Ltd. | 5 |
2 |
| E. I. du Pont de Nemours and Company | 3473 |
1 |
| Arjo Wiggins Fine Papers Limited | 24 |
1 |
| Dynea Oy | 21 |
1 |
| Fedrigoni S.p.A. | 264 |
1 |
| Flooring Technologies Ltd. | 172 |
1 |
| METADYNEA AUSTRIA GmbH | 11 |
1 |
| Scorrboard, LLC | 8 |
1 |
| Surfactor Germany GmbH | 17 |
1 |
| Metall-Chemie Technologies GmbH | 5 |
1 |
| GPCP IP Holdings LLC | 1531 |
1 |
| Papierfabrik Julius Schulte Söhne GmbH & Co. KG | 2 |
1 |
| Impact Acoustic AG | 11 |
1 |
| Other owners | 1 |