- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 17/50 - Preparation of sulfur dioxide
Patent holdings for IPC class C01B 17/50
Total number of patents in this class: 131
10-year publication summary
6
|
12
|
6
|
6
|
14
|
4
|
12
|
10
|
11
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Saudi Arabian Oil Company | 11322 |
10 |
Haldor Topsøe A/S | 698 |
8 |
OCP S.A. | 70 |
6 |
ThyssenKrupp AG | 3086 |
6 |
ThyssenKrupp Industrial Solutions AG | 729 |
6 |
Topsoe A/S | 732 |
6 |
SABIC Global Technologies B.V. | 4044 |
5 |
Bayer Intellectual Property GmbH | 2671 |
4 |
Shell Internationale Research Maatschappij B.V. | 3792 |
3 |
Shell Oil Company | 2196 |
3 |
China Petroleum & Chemical Corporation | 1623 |
3 |
National University Corporation Kumamoto University | 371 |
3 |
Politecnico di Milano | 790 |
3 |
TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
3 |
Uop LLC | 4083 |
2 |
Aramco Services Company | 3504 |
2 |
Innovator Energy LLC | 46 |
2 |
MECS, Inc. | 80 |
2 |
Membrane Technology and Research, Inc. | 92 |
2 |
Outotec (Finland) Oy | 491 |
2 |
Other owners | 50 |