- 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: 526
10-year publication summary
|
24
|
48
|
47
|
46
|
46
|
52
|
53
|
38
|
36
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| DEKA Products Limited Partnership | 1785 |
23 |
| LG Chem, Ltd. | 17676 |
21 |
| Uop LLC | 4246 |
19 |
| Saudi Arabian Oil Company | 13409 |
14 |
| Covestro Deutschland AG | 2772 |
11 |
| BASF SE | 21017 |
9 |
| 77 Vision Way Ltd | 22 |
8 |
| Dow Technology Investments LLC | 273 |
6 |
| Celanese International Corporation | 911 |
6 |
| Daicel Corporation | 2380 |
5 |
| ExxonMobil Upstream Research Company | 2390 |
5 |
| IFP Energies Nouvelles | 2959 |
5 |
| Toyo Engineering Corporation | 146 |
5 |
| Hans Heidolph GmbH | 65 |
5 |
| ExxonMobil Chemical Patents Inc. | 3974 |
4 |
| Beijing Normal University | 96 |
4 |
| Gradiant Corporation | 131 |
4 |
| IKA-Werke GmbH & Co. KG | 169 |
4 |
| INEOS Europe AG | 204 |
4 |
| Koch-Glitsch, LP | 196 |
4 |
| Other owners | 360 |