- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/50 - Preparation of sulfur dioxide
Patent holdings for IPC class C01B 17/50
Total number of patents in this class: 141
10-year publication summary
|
12
|
6
|
6
|
14
|
4
|
12
|
10
|
13
|
10
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13091 |
11 |
| Haldor Topsøe A/S | 659 |
8 |
| Topsoe A/S | 892 |
8 |
| OCP S.A. | 78 |
6 |
| ThyssenKrupp AG | 3281 |
6 |
| ThyssenKrupp Industrial Solutions AG | 631 |
6 |
| SABIC Global Technologies B.V. | 4335 |
5 |
| Bayer Intellectual Property GmbH | 2500 |
4 |
| Innovator Energy LLC | 67 |
4 |
| Shell Internationale Research Maatschappij B.V. | 3542 |
3 |
| Shell Oil Company | 2141 |
3 |
| Aramco Services Company | 3955 |
3 |
| China Petroleum & Chemical Corporation | 1899 |
3 |
| National University Corporation Kumamoto University | 383 |
3 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12806 |
3 |
| D-crbn BV | 12 |
3 |
| Uop LLC | 4244 |
2 |
| Membrane Technology and Research, Inc. | 90 |
2 |
| Outotec (Finland) Oy | 480 |
2 |
| Oxy USA Inc. | 21 |
2 |
| Other owners | 54 |