- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 45/89 - Preparation of ketenes or dimeric ketenes from carboxylic acids, their anhydrides, esters or halides
Patent holdings for IPC class C07C 45/89
Total number of patents in this class: 10
10-year publication summary
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1
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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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0
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2
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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
|
|---|---|---|
| Pioneer Energy, Inc. | 18 |
2 |
| Tricoya Technologies Ltd | 35 |
2 |
| BASF SE | 21318 |
1 |
| Daicel Corporation | 2544 |
1 |
| SRF Limited | 51 |
1 |
| Suzhou Tianma Specialty Chemicals Co., Ltd. | 2 |
1 |
| Titan Wood Limited | 59 |
1 |
| Topsoe A/S | 1053 |
1 |
| Other owners | 0 |