- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 31/28 - Phosgene
Patent holdings for IPC class C01B 31/28
Total number of patents in this class: 34
10-year publication summary
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4
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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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0
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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
|
|---|---|---|
| BASF SE | 21334 |
8 |
| Covestro Deutschland AG | 2863 |
4 |
| SABIC Global Technologies B.V. | 4632 |
4 |
| Bayer MaterialScience AG | 700 |
3 |
| Bayer AG | 3566 |
2 |
| Warsaw Orthopedic, Inc. | 2741 |
2 |
| Huntsman International LLC | 690 |
2 |
| Adámas Nanotechnologies Inc. | 9 |
1 |
| AET Group | 3 |
1 |
| Akzo Nobel Chemicals International B.V. | 411 |
1 |
| Bayer Technology Services GmbH | 153 |
1 |
| The City University of New York | 56 |
1 |
| Diamond Innovations, Inc. | 235 |
1 |
| Teijin Chemicals Ltd. | 83 |
1 |
| Wanhua Chemical (Ningbo) Co., Ltd. | 81 |
1 |
| Haldor Topsøe A/S | 629 |
1 |
| Other owners | 0 |