- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 51/54 - Preparation of carboxylic acid anhydrides
Patent holdings for IPC class C07C 51/54
Total number of patents in this class: 36
10-year publication summary
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1
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3
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0
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4
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0
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0
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1
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3
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2
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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eastman Chemical Company | 2260 |
6 |
| Novomer, Inc. | 211 |
3 |
| Arkema France | 3978 |
2 |
| Celanese International Corporation | 914 |
2 |
| Corporation de l'École Polytechnique de Montréal | 106 |
2 |
| H R D Corporation | 87 |
2 |
| The University of North Carolina at Chapel Hill | 2011 |
2 |
| BASF SE | 20666 |
1 |
| LG Chem, Ltd. | 17519 |
1 |
| Mitsubishi Rayon Co., Ltd. | 926 |
1 |
| Mitsubishi Chemical Corporation | 4474 |
1 |
| Chiyoda Corporation | 391 |
1 |
| Johnson Matthey Davy Technologies Limited | 261 |
1 |
| Lanxess Deutschland GmbH | 1123 |
1 |
| Lyondell Chemical Technology, L.P. | 268 |
1 |
| North Carolina State University | 1548 |
1 |
| Polyvalor, Société en Commandite | 11 |
1 |
| The Scripps Research Institute | 1343 |
1 |
| Wacker Chemie AG | 2105 |
1 |
| Cathay R&D Center Co., Ltd. | 22 |
1 |
| Other owners | 4 |