- All sections
- D - Textilespaper
- D21B - Fibrous raw materials or their mechanical treatment
- D21B 1/12 - Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods by the use of steam
Patent holdings for IPC class D21B 1/12
Total number of patents in this class: 105
10-year publication summary
|
8
|
3
|
5
|
5
|
3
|
10
|
5
|
4
|
9
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ibiden Co., Ltd. | 1715 |
6 |
| UPM-Kymmene Corporation | 937 |
5 |
| Beta Renewables, S.p.A. | 25 |
4 |
| Entsorgafin S.p.A. | 24 |
4 |
| BASF SE | 20967 |
3 |
| Andritz Inc. | 332 |
3 |
| Green Extraction Technologies | 5 |
3 |
| Seiko Epson Corporation | 19458 |
2 |
| Billerud AB | 126 |
2 |
| Cascades Canada ULC | 607 |
2 |
| Fiberlean Technologies Limited | 114 |
2 |
| Resolute FP US Inc. | 3 |
2 |
| University of Maryland, College Park | 1023 |
2 |
| Versalis S.P.A. | 543 |
2 |
| Voith Patent GmbH | 2765 |
2 |
| Pulmac Systems International, Inc. | 7 |
2 |
| Creapaper GmbH | 37 |
2 |
| Zelfo Technology GmbH | 7 |
2 |
| Fiberboard GmbH | 9 |
2 |
| Releaf Paper France SAS | 3 |
2 |
| Other owners | 51 |