- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/88 - Concentration of sulfuric acid
Patent holdings for IPC class C01B 17/88
Total number of patents in this class: 48
10-year publication summary
|
1
|
2
|
1
|
5
|
3
|
5
|
9
|
3
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 1082 |
5 |
| Haldor Topsøe A/S | 630 |
3 |
| BASF SE | 21334 |
2 |
| Asia Union Electronic Chemical Corporation | 7 |
2 |
| Outotec Oyj | 233 |
2 |
| Teijin Aramid B.V. | 163 |
2 |
| Plinke GmbH | 4 |
2 |
| DuPont Safety & Construction, Inc. | 683 |
2 |
| Metso Metals Oy | 226 |
2 |
| Bayer Intellectual Property GmbH | 2346 |
1 |
| Bayer MaterialScience AG | 699 |
1 |
| NGK Insulators, Ltd. | 5169 |
1 |
| Aqua Metals, Inc. | 35 |
1 |
| Aramco Services Company | 4191 |
1 |
| Chemetics Inc. | 69 |
1 |
| Covestro Deutschland AG | 2856 |
1 |
| H R D Corporation | 87 |
1 |
| Outotec (Finland) Oy | 455 |
1 |
| Saudi Arabian Oil Company | 14416 |
1 |
| Solvay SA | 937 |
1 |
| Other owners | 15 |