- 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
|
0
|
1
|
4
|
2
|
0
|
1
|
0
|
2
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Metso Paper Sweden Aktiebolag | 44 |
3 |
| Andritz Inc. | 326 |
2 |
| Nano-green Biorefineries Inc. | 10 |
2 |
| Solenis Technologies, L.P. | 320 |
2 |
| Andritz Oy | 289 |
1 |
| Ecolab USA Inc. | 5722 |
1 |
| Treetotextile AB | 55 |
1 |
| Axolot Solutions AB | 2 |
1 |
| Earthrecycle Co., Ltd. | 12 |
1 |
| Cmblu Energy AG | 56 |
1 |
| Jordon Peter Marshall | 2 |
1 |
| Other owners | 0 |