- 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 23/64 - Addition to the formed paper by contacting paper with a device carrying the material the material being non-fluent at the moment of transfer, e.g. in form of preformed, at least partially hardened coating
Patent holdings for IPC class D21H 23/64
Total number of patents in this class: 11
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fiberlean Technologies Limited | 114 |
2 |
| Pratt Corrugated Holdings, Inc. | 279 |
2 |
| Stora Enso Oyj | 1616 |
2 |
| ESKA B.V. | 25 |
1 |
| Intertape Polymer Corp. | 195 |
1 |
| Nissin Foods Holdings Co., Ltd. | 513 |
1 |
| S.D. Warren Company, DBA Sappi Fine Paper North America | 13 |
1 |
| Ahlstrom Oyj | 101 |
1 |
| Other owners | 0 |