- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 3/42 - Regulation; Control
Patent holdings for IPC class B01D 3/42
Total number of patents in this class: 493
10-year publication summary
|
24
|
25
|
50
|
50
|
47
|
50
|
56
|
51
|
38
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| DEKA Products Limited Partnership | 1640 |
22 |
| LG Chem, Ltd. | 17205 |
18 |
| Uop LLC | 4083 |
18 |
| Saudi Arabian Oil Company | 11322 |
11 |
| BASF SE | 19740 |
9 |
| Covestro Deutschland AG | 2429 |
9 |
| Dow Technology Investments LLC | 270 |
6 |
| Celanese International Corporation | 879 |
6 |
| 77 Vision Way Ltd | 12 |
6 |
| Daicel Corporation | 2128 |
5 |
| ExxonMobil Upstream Research Company | 2525 |
5 |
| IFP Energies Nouvelles | 2717 |
5 |
| Toyo Engineering Corporation | 138 |
5 |
| Hans Heidolph GmbH | 57 |
5 |
| BASF AG | 1258 |
4 |
| ExxonMobil Chemical Patents Inc. | 4286 |
4 |
| Beijing Normal University | 86 |
4 |
| Gradiant Corporation | 123 |
4 |
| IKA-Werke GmbH & Co. KG | 174 |
4 |
| INEOS Europe AG | 188 |
4 |
| Other owners | 339 |