- 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: 224
10-year publication summary
|
19
|
14
|
20
|
16
|
10
|
7
|
10
|
12
|
11
|
11
|
| 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. | 100 |
7 |
| Bristol-myers Squibb Company | 4849 |
5 |
| FUJIFILM Corporation | 29696 |
5 |
| Tokai Optical Co., Ltd. | 129 |
5 |
| BASF SE | 21017 |
4 |
| Bayer AG | 3356 |
4 |
| Bayer Cropscience AG | 2014 |
4 |
| Shin-Etsu Chemical Co., Ltd. | 5695 |
4 |
| Tokyo Ohka Kogyo Co., Ltd. | 1552 |
4 |
| Ube Corporation | 381 |
4 |
| F. Hoffmann-La Roche AG | 7948 |
3 |
| Merck Patent GmbH | 5767 |
3 |
| Syngenta Participations AG | 1833 |
3 |
| Sumitomo Chemical Company, Limited | 9079 |
3 |
| Insight High Technology (Beijing) Co. Ltd. | 9 |
3 |
| Jiangsu Hengrui Medicine Co., Ltd. | 708 |
3 |
| Kumiai Chemical Industry Co., Ltd. | 308 |
3 |
| Shanghai Hengrui Pharmaceutical Co., Ltd. | 644 |
3 |
| Southern Research Institute | 210 |
3 |
| The United States Government AS represented by The Department of Veterans Affairs | 1209 |
3 |
| Other owners | 148 |