- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/52 - Preparation of sulfur dioxide by roasting sulfides
Patent holdings for IPC class C01B 17/52
Total number of patents in this class: 14
10-year publication summary
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2
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0
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0
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0
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1
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2
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2
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| China Petroleum & Chemical Corporation | 2190 |
2 |
| Glencore Technology Pty Ltd | 55 |
2 |
| Sinopec Nanjing Research Institute of Chemical Industry Co., Ltd. | 24 |
2 |
| Shell USA, Inc. | 1355 |
2 |
| Lurgi GmbH | 94 |
1 |
| Outotec (Finland) Oy | 455 |
1 |
| Outotec Oyj | 233 |
1 |
| Universidad de Concepcion | 127 |
1 |
| Sichuan Lomon Titanium Co., Ltd | 9 |
1 |
| Metso Metals Oy | 42 |
1 |
| Other owners | 0 |