- All sections
- D - Textilespaper
- D21C - Production of cellulose by removing non-cellulose substances from cellulose- containing materialsregeneration of pulping liquorsapparatus therefor
- D21C 9/04 - Washing in diffusers
Patent holdings for IPC class D21C 9/04
Total number of patents in this class: 16
10-year publication summary
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0
|
0
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1
|
4
|
2
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0
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1
|
1
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2
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Metso Paper Sweden Aktiebolag | 44 |
3 |
| Andritz Inc. | 333 |
2 |
| Nano-green Biorefineries Inc. | 11 |
2 |
| Solenis Technologies, L.P. | 334 |
2 |
| Andritz Oy | 282 |
1 |
| Ecolab USA Inc. | 5475 |
1 |
| Treetotextile AB | 51 |
1 |
| Axolot Solutions AB | 2 |
1 |
| Earthrecycle Co., Ltd. | 8 |
1 |
| Cmblu Energy AG | 52 |
1 |
| Jordon Peter Marshall | 1 |
1 |
| Other owners | 0 |