- All sections
- D - Textilespaper
- D21J - Fibreboardmanufacture of articles from cellulosic fibrous suspensions or from papier-mâché
- D21J 1/18 - Hardboard
Patent holdings for IPC class D21J 1/18
Total number of patents in this class: 7
10-year publication summary
|
0
|
2
|
0
|
0
|
0
|
0
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0
|
1
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| EMPA Eidgenössische Materialprüfungs-und Forschungsanstalt | 202 |
2 |
| Eth Zurich | 1324 |
2 |
| BASF SE | 21303 |
1 |
| Ewald Dorken AG | 245 |
1 |
| Maezawa Industries, Inc. | 14 |
1 |
| Other owners | 0 |