- All sections
- D - Textilespaper
- D21C - Production of cellulose by removing non-cellulose substances from cellulose- containing materialsregeneration of pulping liquorsapparatus therefor
- D21C 7/06 - Feeding devices
Patent holdings for IPC class D21C 7/06
Total number of patents in this class: 126
10-year publication summary
|
14
|
8
|
4
|
14
|
16
|
6
|
2
|
5
|
6
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valmet AB | 556 |
48 |
| Andritz Inc. | 324 |
11 |
| Andritz Oy | 293 |
6 |
| Metso Fiber Karlstad AB | 16 |
6 |
| Metso Paper Sweden Aktiebolag | 44 |
6 |
| Andritz AG | 245 |
5 |
| International Paper Company | 598 |
4 |
| GPCP IP Holdings LLC | 1531 |
4 |
| Trifilon AB | 22 |
3 |
| Seiko Epson Corporation | 20337 |
2 |
| Beta Renewables, S.p.A. | 25 |
2 |
| Mascoma Canada Inc. | 12 |
2 |
| Metso Paper, Inc. | 333 |
2 |
| Betulium Oy | 15 |
2 |
| Bracell Bahia Specialty Cellulose SA | 5 |
2 |
| Agro Industries Recherche et Developpement | 33 |
1 |
| Biogasol ApS | 6 |
1 |
| Biogasol IPR ApS | 8 |
1 |
| Eagle Industry Co., Ltd. | 1180 |
1 |
| Hao, Li | 29 |
1 |
| Other owners | 16 |