- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/765 - Multi-stage SO3-conversion
Patent holdings for IPC class C01B 17/765
Total number of patents in this class: 98
10-year publication summary
|
14
|
5
|
8
|
3
|
3
|
5
|
2
|
1
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 1059 |
12 |
| Haldor Topsøe A/S | 636 |
10 |
| MECS, Inc. | 63 |
9 |
| Chemetics Inc. | 67 |
8 |
| ThyssenKrupp AG | 3353 |
8 |
| ThyssenKrupp Industrial Solutions AG | 630 |
8 |
| Outotec (Finland) Oy | 455 |
4 |
| Outotec Oyj | 234 |
4 |
| Metso Metals Oy | 225 |
4 |
| JFE Steel Corporation | 7589 |
3 |
| Nihon Kanki Industry Co., Ltd. | 6 |
3 |
| Bayer Technology Services GmbH | 153 |
2 |
| Cppe Carbon Process & Plant Engineering S.A. | 17 |
2 |
| Veolia North America Regeneration Services, LLC | 10 |
2 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3272 |
2 |
| NC Engenharia Industria E Comercio Ltda | 5 |
2 |
| Kawasaki Engineering Co.,Ltd | 3 |
2 |
| Metso Metals Oy | 43 |
2 |
| Bayer Intellectual Property GmbH | 2357 |
1 |
| Applied Technology Limited Partnership | 6 |
1 |
| Other owners | 9 |