- All sections
- C - Chemistry; metallurgy
- 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: 21
10-year publication summary
|
3
|
0
|
2
|
2
|
0
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0
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0
|
3
|
1
|
0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Boe Technology Group Co., Ltd. | 38881 |
3 |
| Transitions Optical, Inc. | 280 |
3 |
| LG Chem, Ltd. | 17639 |
1 |
| The Regents of the University of California | 19517 |
1 |
| Board of Regents of the University of Nebraska | 741 |
1 |
| Ind-Swift Laboratories Limited | 57 |
1 |
| Indiana University Research and Technology Corporation | 800 |
1 |
| Jiangsu Hengyi Pharmaceutical Co., Ltd. | 186 |
1 |
| Jitsubo Co., Ltd. | 16 |
1 |
| National University Corporation Tokyo University of Agriculture and Technology | 338 |
1 |
| Tokyo Ohka Kogyo Co., Ltd. | 1508 |
1 |
| Towa Pharmaceutical Co., Ltd. | 49 |
1 |
| The University of Bristol | 240 |
1 |
| The University of Tokyo | 4060 |
1 |
| Beijing BOE Technology Development Co., Ltd. | 2301 |
1 |
| Jiangsu Hengrui Pharmaceuticals Co., Ltd. | 139 |
1 |
| Osaka Shinyaku Co., Ltd. | 3 |
1 |
| Other owners | 0 |