- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 303/04 - Compounds containing oxirane rings containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
Patent holdings for IPC class C07D 303/04
Total number of patents in this class: 380
10-year publication summary
|
21
|
17
|
22
|
32
|
27
|
33
|
23
|
22
|
16
|
5
|
| 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 |
41 |
| Dow Global Technologies LLC | 10147 |
23 |
| Scientific Design Company, Inc. | 131 |
16 |
| BASF SE | 19740 |
15 |
| Lyondell Chemical Technology, L.P. | 292 |
11 |
| China Petroleum & Chemical Corporation | 1623 |
10 |
| Evonik Operations GmbH | 3879 |
10 |
| Nippon Shokubai Co., Ltd. | 1487 |
9 |
| SABIC Global Technologies B.V. | 4044 |
7 |
| ThyssenKrupp Industrial Solutions AG | 729 |
7 |
| BASF Agro B.V. | 211 |
6 |
| Research Institute of Petroleum Processing, Sinopec | 387 |
6 |
| Dow Technology Investments LLC | 270 |
5 |
| Daicel Corporation | 2128 |
5 |
| Dalian University of Technology | 1387 |
5 |
| Wanhua Chemical Group Co., Ltd. | 286 |
5 |
| Evonik Degussa GmbH | 1574 |
4 |
| Kao Corporation | 4843 |
4 |
| Hunan Changling Petrochemical Science and Technology Development Co., Ltd | 12 |
4 |
| Lonza Ltd. | 609 |
4 |
| Other owners | 183 |