- 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: 462
10-year publication summary
|
32
|
35
|
23
|
34
|
36
|
35
|
41
|
31
|
24
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 8808 |
45 |
| Evonik Operations GmbH | 3879 |
33 |
| Adisseo France S.A.S. | 147 |
16 |
| Bayer Cropscience AG | 2241 |
14 |
| Mitsui Chemicals, Inc. | 3134 |
12 |
| Evonik Degussa GmbH | 1574 |
10 |
| Daikin Industries, Ltd. | 9495 |
9 |
| Kumiai Chemical Industry Co., Ltd. | 307 |
8 |
| Centre National de La Recherche Scientifique | 9632 |
7 |
| Hoya Lens Thailand Ltd. | 447 |
7 |
| Zhejiang University | 2619 |
7 |
| BASF SE | 19740 |
6 |
| Chevron Phillips Chemical Company LP | 1779 |
6 |
| Wyeth LLC | 691 |
5 |
| National University Corporation Hokkaido University | 1323 |
5 |
| Zhejiang Nhu Company Limited | 143 |
5 |
| F. Hoffmann-La Roche AG | 7958 |
4 |
| Pfizer Inc. | 3322 |
4 |
| Ajinomoto Co., Inc. | 2337 |
4 |
| Arkema France | 3790 |
4 |
| Other owners | 251 |