- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 301/32 - SeparationPurification
Patent holdings for IPC class C07D 301/32
Total number of patents in this class: 245
10-year publication summary
|
10
|
15
|
17
|
22
|
12
|
15
|
13
|
8
|
8
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dow Technology Investments LLC | 273 |
25 |
| Lyondell Chemical Technology, L.P. | 265 |
20 |
| Dow Global Technologies LLC | 10413 |
18 |
| Shell USA, Inc. | 1238 |
11 |
| Shell Internationale Research Maatschappij B.V. | 3553 |
10 |
| BASF SE | 20991 |
9 |
| ThyssenKrupp Uhde GmbH | 336 |
7 |
| Sumitomo Chemical Company, Limited | 9047 |
6 |
| Evonik Operations GmbH | 4166 |
6 |
| Shell Oil Company | 2138 |
5 |
| China Petroleum & Chemical Corporation | 1909 |
5 |
| Scientific Design Company, Inc. | 116 |
5 |
| QBiotics Pty Ltd | 29 |
5 |
| Nippon Shokubai Co., Ltd. | 1502 |
4 |
| Shanghai Research Institute of Petrochemical Technology Sinopec | 264 |
4 |
| ThyssenKrupp Industrial Solutions AG | 632 |
4 |
| Atlas Investments Seattle LLC | 8 |
4 |
| Molo Technologies LLC | 8 |
4 |
| Evonik Degussa GmbH | 1492 |
3 |
| Petron Scientech Inc | 4 |
3 |
| Other owners | 87 |