- 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 27/18 - Paper-based or board-based structures for surface covering
Patent holdings for IPC class D21H 27/18
Total number of patents in this class: 83
10-year publication summary
|
6
|
12
|
8
|
6
|
5
|
5
|
1
|
7
|
2
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| United States Gypsum Company | 898 |
6 |
| Henkel AG & Co. KGaA | 10682 |
5 |
| International Paper Company | 640 |
5 |
| WestRock MWV, LLC | 335 |
5 |
| BASF SE | 21135 |
4 |
| State Line Holdings, LLC | 4 |
3 |
| Ahlstrom-munksjo Oyj | 161 |
3 |
| E. I. du Pont de Nemours and Company | 3777 |
2 |
| Armstrong World Industries, Inc. | 351 |
2 |
| The Chemours Company Fc, LLC | 1288 |
2 |
| Fiberlean Technologies Limited | 110 |
2 |
| Fritz Egger GmbH & Co. og | 250 |
2 |
| Henry Molded Products Inc. | 10 |
2 |
| Industry-Academic Cooperation Foundation Gyeongsang National University | 604 |
2 |
| Stora Enso Oyj | 1652 |
2 |
| Swiss Krono Tec AG | 505 |
2 |
| Ahlstrom Oyj | 180 |
2 |
| Dai Nippon Printing Co., Ltd. | 4169 |
1 |
| Georgia-Pacific Gypsum LLC | 222 |
1 |
| Akzo Nobel Chemicals International B.V. | 431 |
1 |
| Other owners | 29 |