- 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 21/26 - Agents rendering paper transparent or translucent
Patent holdings for IPC class D21H 21/26
Total number of patents in this class: 27
10-year publication summary
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0
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0
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0
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0
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0
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0
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6
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4
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4
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Oji Holdings Corporation | 750 |
4 |
| Teknologian Tutkimuskeskus VTT | 249 |
2 |
| Société des Produits Nestlé S.A. | 9884 |
1 |
| Samsung Electronics Co., Ltd. | 149582 |
1 |
| Rohm Co., Ltd. | 6578 |
1 |
| Pioneer Corporation | 4124 |
1 |
| Arjowiggins Security | 121 |
1 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1394 |
1 |
| Harima Chemicals, Inc. | 205 |
1 |
| Kawano Paper Co., Ltd. | 4 |
1 |
| Oberthur Fiduciaire SAS | 133 |
1 |
| Oberthur Technologies | 137 |
1 |
| Oji Paper Co., Ltd. | 51 |
1 |
| Schoeller Technocell GmbH & Co. KG | 19 |
1 |
| Stora Enso Oyj | 1643 |
1 |
| Sun Chemical B.V. | 369 |
1 |
| Seoul National University R&db Foundation | 3809 |
1 |
| RISE Research Institutes of Sweden AB | 59 |
1 |
| Plasticos Del Segura, S.L | 6 |
1 |
| Aktsionernoe Obshchestvo "goznak" (ao "goznak") | 16 |
1 |
| Other owners | 3 |