- All sections
- C - Chemistry; metallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 321/28 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
Patent holdings for IPC class C07C 321/28
Total number of patents in this class: 205
10-year publication summary
|
14
|
23
|
14
|
24
|
17
|
10
|
9
|
11
|
13
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bristol-myers Squibb Company | 5080 |
5 |
| Miyoshi Oil & Fat Co., Ltd. | 82 |
5 |
| Tokai Optical Co., Ltd. | 127 |
5 |
| F. Hoffmann-La Roche AG | 7958 |
4 |
| BASF SE | 19740 |
4 |
| Merck Patent GmbH | 5909 |
4 |
| Bayer AG | 3045 |
4 |
| Bayer Cropscience AG | 2241 |
4 |
| FUJIFILM Corporation | 27102 |
4 |
| Tokyo Ohka Kogyo Co., Ltd. | 1481 |
4 |
| Ube Corporation | 315 |
4 |
| Janssen Pharmaceutica N.V. | 3839 |
3 |
| Syngenta Participations AG | 4970 |
3 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
3 |
| Insight High Technology (Beijing) Co. Ltd. | 8 |
3 |
| Jiangsu Hengrui Medicine Co., Ltd. | 780 |
3 |
| Kumiai Chemical Industry Co., Ltd. | 307 |
3 |
| Rohm and Haas Electronic Materials LLC | 637 |
3 |
| Shanghai Hengrui Pharmaceutical Co., Ltd. | 588 |
3 |
| LG Chem, Ltd. | 17205 |
2 |
| Other owners | 132 |