- 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: 85
10-year publication summary
|
15
|
1
|
7
|
4
|
7
|
8
|
3
|
3
|
4
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Melodea Ltd. | 24 |
5 |
| FPInnovations | 244 |
4 |
| Haldor Topsøe A/S | 659 |
4 |
| Rohm and Haas Company | 2906 |
3 |
| Eisenmann AG | 99 |
3 |
| Messer Industries USA, Inc. | 120 |
3 |
| Topsoe A/S | 891 |
3 |
| Asia Union Electronic Chemical Corporation | 6 |
2 |
| MECS, Inc. | 75 |
2 |
| Nemaska Lithium Inc. | 73 |
2 |
| NORAM Engineering and Constructors Ltd. | 29 |
2 |
| Tronox LLC | 161 |
2 |
| Veolia ES Technical Solutions, L.L.C | 12 |
2 |
| Veolia North America Regeneration Services, LLC | 10 |
2 |
| Plinke GmbH | 19 |
2 |
| POSCO Holdings Inc. | 331 |
2 |
| BASF SE | 20933 |
1 |
| E. I. du Pont de Nemours and Company | 4082 |
1 |
| Centre National de La Recherche Scientifique | 10418 |
1 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42704 |
1 |
| Other owners | 38 |