- 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: 24
10-year publication summary
|
3
|
0
|
0
|
0
|
0
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0
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0
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6
|
4
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Oji Holdings Corporation | 712 |
4 |
| Teknologian Tutkimuskeskus VTT | 247 |
2 |
| Société des Produits Nestlé S.A. | 9160 |
1 |
| Rohm Co., Ltd. | 6412 |
1 |
| Pioneer Corporation | 4421 |
1 |
| Arjowiggins Security | 126 |
1 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1355 |
1 |
| Harima Chemicals, Inc. | 204 |
1 |
| Kawano Paper Co., Ltd. | 5 |
1 |
| Oberthur Fiduciaire SAS | 135 |
1 |
| Oberthur Technologies | 146 |
1 |
| Oji Paper Co., Ltd. | 60 |
1 |
| Schoeller Technocell GmbH & Co. KG | 19 |
1 |
| Stora Enso Oyj | 1597 |
1 |
| Sun Chemical B.V. | 361 |
1 |
| RISE Research Institutes of Sweden AB | 51 |
1 |
| Plasticos Del Segura, S.L | 6 |
1 |
| Aktsionernoe Obshchestvo "goznak" (ao "goznak") | 16 |
1 |
| Sol-gel Materials & Applications Ltd | 9 |
1 |
| Miyako Printing Ink Co.,ltd. | 3 |
1 |
| Other owners | 0 |