- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 63/44 - Polycyclic acids with carboxyl groups bound to condensed ring systems containing three or more rings containing one carboxyl group
Patent holdings for IPC class C07C 63/44
Total number of patents in this class: 20
10-year publication summary
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0
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2
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2
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0
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0
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0
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3
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1
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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
|
|---|---|---|
| Boe Technology Group Co., Ltd. | 44802 |
3 |
| Transitions Optical, Inc. | 231 |
3 |
| Osaka Shinyaku Co., Ltd. | 4 |
2 |
| LG Chem, Ltd. | 18005 |
1 |
| The Regents of the University of California | 20989 |
1 |
| Board of Regents of the University of Nebraska | 798 |
1 |
| Ind-Swift Laboratories Limited | 47 |
1 |
| Indiana University Research and Technology Corporation | 780 |
1 |
| Jiangsu Hengyi Pharmaceutical Co., Ltd. | 389 |
1 |
| Tokyo Ohka Kogyo Co., Ltd. | 1556 |
1 |
| Towa Pharmaceutical Co., Ltd. | 62 |
1 |
| The University of Bristol | 264 |
1 |
| The University of Tokyo | 4413 |
1 |
| Beijing BOE Technology Development Co., Ltd. | 4722 |
1 |
| Jiangsu Hengrui Pharmaceuticals Co., Ltd. | 311 |
1 |
| Other owners | 0 |