- All sections
- D - Textiles; paper
- D21D - Treatment of the materials before passing to the paper-making machine
- D21D 1/36 - Other mills or refiners with vertical shaft
Patent holdings for IPC class D21D 1/36
Total number of patents in this class: 6
10-year publication summary
|
1
|
1
|
0
|
1
|
1
|
0
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| UPM-Kymmene Corporation | 912 |
3 |
| Fiberlean Technologies Limited | 119 |
1 |
| Imerys Minerals Limited | 129 |
1 |
| Mikkelin Ammattikorkeakoulu Oy | 4 |
1 |
| Other owners | 0 |