- All sections
- C - Chemistrymetallurgy
- 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: 372
10-year publication summary
|
15
|
20
|
32
|
27
|
30
|
19
|
21
|
16
|
14
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 9109 |
33 |
| Dow Global Technologies LLC | 10571 |
25 |
| BASF SE | 21098 |
17 |
| Scientific Design Company, Inc. | 117 |
17 |
| China Petroleum & Chemical Corporation | 1955 |
11 |
| Nippon Shokubai Co., Ltd. | 1507 |
9 |
| ThyssenKrupp Uhde GmbH | 345 |
9 |
| Lyondell Chemical Technology, L.P. | 259 |
8 |
| SABIC Global Technologies B.V. | 4405 |
7 |
| Daicel Corporation | 2411 |
6 |
| Research Institute of Petroleum Processing, Sinopec | 369 |
6 |
| Wanhua Chemical Group Co., Ltd. | 359 |
6 |
| BASF Agro B.V. | 202 |
5 |
| Dalian University of Technology | 1539 |
5 |
| ThyssenKrupp Industrial Solutions AG | 632 |
5 |
| Evonik Degussa GmbH | 1460 |
4 |
| Kao Corporation | 5006 |
4 |
| Dow Technology Investments LLC | 274 |
4 |
| Hunan Changling Petrochemical Science and Technology Development Co., Ltd | 12 |
4 |
| Lonza Ltd. | 618 |
4 |
| Other owners | 183 |