- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 301/32 - Separation; Purification
Patent holdings for IPC class C07D 301/32
Total number of patents in this class: 250
10-year publication summary
|
12
|
10
|
15
|
18
|
24
|
12
|
16
|
13
|
8
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dow Technology Investments LLC | 270 |
25 |
| Lyondell Chemical Technology, L.P. | 292 |
23 |
| Dow Global Technologies LLC | 10147 |
16 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
14 |
| Shell USA, Inc. | 1074 |
11 |
| BASF SE | 19740 |
9 |
| Sumitomo Chemical Company, Limited | 8808 |
8 |
| Evonik Operations GmbH | 3879 |
8 |
| BASF AG | 1258 |
5 |
| Shell Oil Company | 2196 |
5 |
| China Petroleum & Chemical Corporation | 1623 |
5 |
| Scientific Design Company, Inc. | 131 |
5 |
| QBiotics Pty Ltd | 25 |
5 |
| The Dow Chemical Company | 802 |
4 |
| Nippon Shokubai Co., Ltd. | 1487 |
4 |
| Shanghai Research Institute of Petrochemical Technology Sinopec | 252 |
4 |
| ThyssenKrupp Industrial Solutions AG | 729 |
4 |
| Cleen Technology Inc. | 10 |
4 |
| Evonik Degussa GmbH | 1574 |
3 |
| Solvay SA | 1181 |
3 |
| Other owners | 85 |