- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 309/77 - Esters of sulfonic acids having sulfur atoms of esterified sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing carboxyl groups bound to the carbon skeleton
Patent holdings for IPC class C07C 309/77
Total number of patents in this class: 16
10-year publication summary
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2
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bristol-myers Squibb Company | 4848 |
2 |
| The Regents of the University of California | 20230 |
1 |
| International Business Machines Corporation | 61694 |
1 |
| FUJIFILM Corporation | 29752 |
1 |
| Shin-Etsu Chemical Co., Ltd. | 5745 |
1 |
| DSM IP Assets B.V. | 5553 |
1 |
| Mitsubishi Rayon Co., Ltd. | 897 |
1 |
| Mitsubishi Chemical Corporation | 4593 |
1 |
| Central Glass Company, Limited | 1274 |
1 |
| Council of Scientific & Industrial Research | 1429 |
1 |
| FutureFuel Chemical Company | 17 |
1 |
| Kyoto University | 2839 |
1 |
| Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2391 |
1 |
| Nihon Medi-physics Co., Ltd. | 181 |
1 |
| Tokyo Institute of Technology | 1365 |
1 |
| Other owners | 0 |