- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 3/40 - Extractive distillation
Patent holdings for IPC class B01D 3/40
Total number of patents in this class: 310
10-year publication summary
|
19
|
22
|
32
|
33
|
25
|
22
|
22
|
18
|
23
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21017 |
16 |
| Uop LLC | 4246 |
12 |
| Sulzer Management AG | 680 |
11 |
| AMT International, Inc. | 43 |
9 |
| Natural Extraction Systems, LLC | 109 |
9 |
| CPC Corporation, Taiwan | 63 |
8 |
| China Petroleum & Chemical Corporation | 1911 |
7 |
| Lummus Technology Inc. | 307 |
7 |
| LG Chem, Ltd. | 17676 |
6 |
| Daicel Corporation | 2380 |
6 |
| Zeon Corporation | 4113 |
6 |
| ExxonMobil Chemical Patents Inc. | 3974 |
5 |
| Saudi Arabian Oil Company | 13409 |
5 |
| Evonik Oxeno GmbH & Co. KG | 333 |
5 |
| Dow Global Technologies LLC | 10437 |
4 |
| Archer Daniels Midland Company | 1132 |
4 |
| Chempolis Oy | 26 |
4 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4003 |
4 |
| Lyondell Chemical Technology, L.P. | 265 |
4 |
| SABIC Global Technologies B.V. | 4370 |
4 |
| Other owners | 174 |