- 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: 233
10-year publication summary
|
15
|
18
|
24
|
12
|
16
|
13
|
9
|
8
|
3
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dow Technology Investments LLC | 280 |
25 |
| Dow Global Technologies LLC | 10960 |
19 |
| Lyondell Chemical Technology, L.P. | 242 |
19 |
| BASF SE | 21308 |
10 |
| Shell Internationale Research Maatschappij B.V. | 3398 |
10 |
| Shell USA, Inc. | 1321 |
10 |
| ThyssenKrupp Uhde GmbH | 380 |
7 |
| Evonik Operations GmbH | 4368 |
6 |
| Sumitomo Chemical Company, Limited | 8968 |
5 |
| Shell Oil Company | 2067 |
5 |
| China Petroleum & Chemical Corporation | 2154 |
5 |
| Scientific Design Company, Inc. | 115 |
5 |
| Nippon Shokubai Co., Ltd. | 1542 |
4 |
| Shanghai Research Institute of Petrochemical Technology Sinopec | 259 |
4 |
| ThyssenKrupp Industrial Solutions AG | 630 |
4 |
| Atlas Investments Seattle LLC | 8 |
4 |
| Molo Technologies LLC | 8 |
4 |
| Evonik Degussa GmbH | 1371 |
3 |
| Petron Scientech Inc | 4 |
3 |
| Spolek Pro Chemickou a Hutni Vyrobu A.S. | 61 |
3 |
| Other owners | 78 |