- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/92 - Recovery from acid tar or the like
Patent holdings for IPC class C01B 17/92
Total number of patents in this class: 5
10-year publication summary
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0
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1
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1
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0
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0
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0
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0
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0
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1
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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
|
|---|---|---|
| Buckman Laboratories International, Inc. | 239 |
1 |
| Celanese International Corporation | 910 |
1 |
| Lucite International UK Limited | 43 |
1 |
| Haldor Topsøe A/S | 629 |
1 |
| Topsoe A/S | 1080 |
1 |
| Other owners | 0 |