- All sections
- C - Chemistry; metallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 319/20 - Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides by reactions not involving the formation of sulfide groups
Patent holdings for IPC class C07C 319/20
Total number of patents in this class: 461
10-year publication summary
|
35
|
23
|
34
|
36
|
35
|
41
|
31
|
24
|
21
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 8976 |
43 |
| Evonik Operations GmbH | 4022 |
33 |
| Adisseo France S.A.S. | 146 |
15 |
| Bayer Cropscience AG | 2142 |
13 |
| Mitsui Chemicals, Inc. | 3187 |
12 |
| Evonik Degussa GmbH | 1557 |
10 |
| Daikin Industries, Ltd. | 9810 |
9 |
| Kumiai Chemical Industry Co., Ltd. | 317 |
8 |
| Centre National de La Recherche Scientifique | 10068 |
7 |
| Hoya Lens Thailand Ltd. | 511 |
7 |
| BASF SE | 20387 |
6 |
| Chevron Phillips Chemical Company LP | 1818 |
6 |
| Zhejiang Nhu Company Limited | 167 |
6 |
| Wyeth LLC | 671 |
5 |
| National University Corporation Hokkaido University | 1332 |
5 |
| Zhejiang University | 2936 |
5 |
| F. Hoffmann-La Roche AG | 7939 |
4 |
| Pfizer Inc. | 3371 |
4 |
| Ajinomoto Co., Inc. | 2314 |
4 |
| Arkema France | 3887 |
4 |
| Other owners | 255 |