- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/90 - SeparationPurification
Patent holdings for IPC class C01B 17/90
Total number of patents in this class: 94
10-year publication summary
|
1
|
7
|
4
|
7
|
8
|
3
|
3
|
4
|
7
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| POSCO Holdings Inc. | 698 |
5 |
| Melodea Ltd. | 22 |
4 |
| Haldor Topsøe A/S | 630 |
4 |
| Rohm and Haas Company | 2948 |
3 |
| Eisenmann AG | 98 |
3 |
| FPInnovations | 224 |
3 |
| Messer Industries USA, Inc. | 126 |
3 |
| Topsoe A/S | 1082 |
3 |
| Asia Union Electronic Chemical Corporation | 7 |
2 |
| Nemaska Lithium Inc. | 79 |
2 |
| NORAM Engineering and Constructors Ltd. | 29 |
2 |
| Research Institute of Industrial Science & Technology | 575 |
2 |
| Sulzer Management AG | 719 |
2 |
| Tronox LLC | 144 |
2 |
| Veolia North America Regeneration Services, LLC | 10 |
2 |
| Plinke GmbH | 4 |
2 |
| BASF SE | 21334 |
1 |
| E. I. du Pont de Nemours and Company | 3430 |
1 |
| Centre National de La Recherche Scientifique | 11143 |
1 |
| Industrial Technology Research Institute | 5204 |
1 |
| Other owners | 46 |