- All sections
- C - Chemistrymetallurgy
- 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: 216
10-year publication summary
|
23
|
14
|
24
|
17
|
10
|
9
|
12
|
13
|
11
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Miyoshi Oil & Fat Co., Ltd. | 94 |
6 |
| Bristol-myers Squibb Company | 4863 |
5 |
| Tokai Optical Co., Ltd. | 127 |
5 |
| F. Hoffmann-La Roche AG | 7942 |
4 |
| BASF SE | 20432 |
4 |
| Merck Patent GmbH | 5842 |
4 |
| Bayer AG | 3209 |
4 |
| Bayer Cropscience AG | 2138 |
4 |
| FUJIFILM Corporation | 28805 |
4 |
| Tokyo Ohka Kogyo Co., Ltd. | 1508 |
4 |
| Ube Corporation | 333 |
4 |
| Syngenta Participations AG | 3032 |
3 |
| Sumitomo Chemical Company, Limited | 8988 |
3 |
| Shin-Etsu Chemical Co., Ltd. | 5446 |
3 |
| Insight High Technology (Beijing) Co. Ltd. | 8 |
3 |
| Jiangsu Hengrui Medicine Co., Ltd. | 760 |
3 |
| Kumiai Chemical Industry Co., Ltd. | 317 |
3 |
| Shanghai Hengrui Pharmaceutical Co., Ltd. | 627 |
3 |
| Southern Research Institute | 211 |
3 |
| The United States Government AS represented by The Department of Veterans Affairs | 1097 |
3 |
| Other owners | 141 |