- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 3/42 - RegulationControl
Patent holdings for IPC class B01D 3/42
Total number of patents in this class: 521
10-year publication summary
|
25
|
50
|
50
|
47
|
50
|
56
|
53
|
42
|
36
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| DEKA Products Limited Partnership | 1760 |
23 |
| LG Chem, Ltd. | 17564 |
21 |
| Uop LLC | 4216 |
19 |
| Saudi Arabian Oil Company | 12891 |
14 |
| Covestro Deutschland AG | 2725 |
11 |
| BASF SE | 20803 |
9 |
| 77 Vision Way Ltd | 22 |
8 |
| Dow Technology Investments LLC | 272 |
6 |
| Celanese International Corporation | 907 |
6 |
| Daicel Corporation | 2332 |
5 |
| ExxonMobil Upstream Research Company | 2411 |
5 |
| IFP Energies Nouvelles | 2915 |
5 |
| Toyo Engineering Corporation | 145 |
5 |
| Hans Heidolph GmbH | 64 |
5 |
| ExxonMobil Chemical Patents Inc. | 4021 |
4 |
| Beijing Normal University | 92 |
4 |
| Gradiant Corporation | 130 |
4 |
| IKA-Werke GmbH & Co. KG | 165 |
4 |
| INEOS Europe AG | 204 |
4 |
| Koch-Glitsch, LP | 196 |
4 |
| Other owners | 355 |