- All sections
- D - Textilespaper
- D21C - Production of cellulose by removing non-cellulose substances from cellulose- containing materialsregeneration of pulping liquorsapparatus therefor
- D21C 11/00 - Regeneration of pulp liquors
Patent holdings for IPC class D21C 11/00
Total number of patents in this class: 717
10-year publication summary
|
80
|
76
|
49
|
64
|
62
|
53
|
37
|
42
|
43
|
25
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Andritz Oy | 282 |
43 |
| Valmet AB | 503 |
42 |
| UPM-Kymmene Corporation | 937 |
28 |
| Stora Enso Oyj | 1634 |
26 |
| Valmet Technologies Oy | 287 |
25 |
| FPInnovations | 244 |
14 |
| GranBio Intellectual Property Holdings, LLC | 119 |
13 |
| SCA Forest Products AB | 81 |
12 |
| Andritz Inc. | 333 |
9 |
| Metsa Fibre Oy | 35 |
9 |
| International N&h Denmark ApS | 323 |
9 |
| Veolia Water Technologies, Inc. | 77 |
8 |
| Pierson Capital Environmental (Beijing) Limited | 10 |
8 |
| Licella Pty Limited | 28 |
7 |
| Voith Patent GmbH | 2756 |
7 |
| Suzano S.A. | 199 |
7 |
| Canfor Pulp Ltd. | 16 |
6 |
| Mondi AG | 155 |
6 |
| Södra Skogsägarna ekonomisk förening | 74 |
6 |
| VIA Separations, Inc. | 26 |
6 |
| Other owners | 426 |