- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 263/04 - Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides
Patent holdings for IPC class C07C 263/04
Total number of patents in this class: 124
10-year publication summary
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1
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6
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8
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10
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5
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5
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6
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6
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3
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3
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Asahi Kasei Chemicals Corporation | 567 |
23 |
| Mitsui Chemicals, Inc. | 3227 |
16 |
| BASF SE | 21165 |
13 |
| Asahi Kasei Kabushiki Kaisha | 2806 |
12 |
| Covestro Deutschland AG | 2808 |
8 |
| Ube Industries, Ltd. | 784 |
4 |
| Institute of Process Engineering, Chinese Academy of Sciences | 323 |
3 |
| Agc, Inc. | 5383 |
3 |
| Janssen Pharmaceutica N.V. | 3213 |
2 |
| Bayer MaterialScience AG | 716 |
2 |
| Asahi Glass Company, Limited | 2654 |
2 |
| National Institute of Advanced Industrial Science and Technology | 3794 |
2 |
| Universiteit Antwerpen | 409 |
2 |
| Chanda Chemical Corp. | 9 |
2 |
| Mojia Biotech Ltd. | 9 |
2 |
| Evonik Degussa GmbH | 1404 |
1 |
| Sabic Innovative Plastics IP B.V. | 648 |
1 |
| Consejo Superior de Investigaciones Cientificas | 812 |
1 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1431 |
1 |
| Council of Scientific and Industrial Research | 580 |
1 |
| Other owners | 23 |