- 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: 561
10-year publication summary
|
50
|
50
|
47
|
50
|
56
|
54
|
44
|
39
|
35
|
23
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17921 |
24 |
| DEKA Products Limited Partnership | 1886 |
24 |
| Uop LLC | 4393 |
19 |
| Saudi Arabian Oil Company | 14207 |
14 |
| Covestro Deutschland AG | 2831 |
12 |
| BASF SE | 21303 |
10 |
| Daicel Corporation | 2508 |
8 |
| 77 Vision Way Ltd | 23 |
8 |
| Toyo Engineering Corporation | 152 |
7 |
| Dow Technology Investments LLC | 279 |
6 |
| Celanese International Corporation | 911 |
6 |
| ExxonMobil Upstream Research Company | 2306 |
5 |
| IFP Energies Nouvelles | 3095 |
5 |
| Hans Heidolph GmbH | 65 |
5 |
| ExxonMobil Chemical Patents Inc. | 3786 |
4 |
| Beijing Normal University | 107 |
4 |
| Gradiant Corporation | 147 |
4 |
| IKA-Werke GmbH & Co. KG | 165 |
4 |
| INEOS Europe AG | 212 |
4 |
| Instrumentation Scientifique de Laboratoire - I.s.l. | 11 |
4 |
| Other owners | 384 |