- All sections
- D - Textilespaper
- D21C - Production of cellulose by removing non-cellulose substances from cellulose- containing materialsregeneration of pulping liquorsapparatus therefor
- D21C 7/02 - Rotary digesters
Patent holdings for IPC class D21C 7/02
Total number of patents in this class: 8
10-year publication summary
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0
|
1
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2
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1
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2
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0
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1
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1
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1
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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
|
|---|---|---|
| Andritz Inc. | 324 |
1 |
| Hao, Li | 29 |
1 |
| Valmet AB | 556 |
1 |
| Metagreen Ventures | 4 |
1 |
| Honext Material S.L. | 15 |
1 |
| Taizen Co., Ltd. | 7 |
1 |
| Thermo Pressure Technologies Limited | 3 |
1 |
| SixRing Inc. | 176 |
1 |
| Other owners | 0 |