- All sections
- D - Textilespaper
- D21C - Production of cellulose by removing non-cellulose substances from cellulose- containing materialsregeneration of pulping liquorsapparatus therefor
- D21C 7/12 - Devices for regulating or controlling
Patent holdings for IPC class D21C 7/12
Total number of patents in this class: 61
10-year publication summary
|
4
|
3
|
2
|
5
|
10
|
3
|
5
|
8
|
5
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valmet AB | 565 |
17 |
| Andritz Oy | 294 |
6 |
| Sekab E-Technology AB | 66 |
5 |
| ABB Research Ltd. | 770 |
3 |
| FPInnovations | 224 |
3 |
| CNH Industrial Canada, Ltd. | 959 |
2 |
| UPM-Kymmene Corporation | 1005 |
2 |
| Kadant Black Clawson LLC | 49 |
2 |
| ABB Schweiz AG | 7755 |
1 |
| Andritz Inc. | 324 |
1 |
| Buckman Laboratories International, Inc. | 239 |
1 |
| Canfor Pulp Ltd. | 12 |
1 |
| Centre de Recherche Industrielle du Quebec | 43 |
1 |
| Compagnie Industrielle de La Matiere Vegetale | 6 |
1 |
| International Paper Company | 595 |
1 |
| Kemira Oyj | 1265 |
1 |
| Metso Paper Sweden Aktiebolag | 43 |
1 |
| Stora Enso Oyj | 1662 |
1 |
| Swiss Krono Tec AG | 520 |
1 |
| Valmet Automation Oy | 113 |
1 |
| Other owners | 9 |