- 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: 726
10-year publication summary
|
63
|
39
|
53
|
48
|
43
|
37
|
38
|
42
|
32
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Andritz Oy | 287 |
46 |
| Valmet AB | 531 |
44 |
| UPM-Kymmene Corporation | 966 |
28 |
| Stora Enso Oyj | 1648 |
27 |
| Valmet Technologies Oy | 287 |
25 |
| GranBio Intellectual Property Holdings, LLC | 127 |
14 |
| FPInnovations | 230 |
13 |
| SCA Forest Products AB | 82 |
12 |
| Andritz Inc. | 327 |
9 |
| Metsa Fibre Oy | 41 |
9 |
| Pierson Capital Environmental (Beijing) Limited | 11 |
9 |
| International N&h Denmark ApS | 370 |
9 |
| Veolia Water Technologies, Inc. | 81 |
8 |
| Licella Pty Limited | 30 |
7 |
| Mondi AG | 192 |
7 |
| Södra Skogsägarna ekonomisk förening | 78 |
7 |
| Voith Patent GmbH | 2770 |
7 |
| Suzano S.A. | 207 |
7 |
| Carbon Engineering ULC | 64 |
7 |
| VIA Separations, Inc. | 29 |
6 |
| Other owners | 425 |