- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 3/34 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
Patent holdings for IPC class B01D 3/34
Total number of patents in this class: 445
10-year publication summary
|
30
|
46
|
44
|
46
|
43
|
40
|
39
|
38
|
34
|
14
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Magema Technology, LLC | 33 |
15 |
| Natural Extraction Systems, LLC | 93 |
13 |
| Gradiant Corporation | 123 |
12 |
| Cargill, Incorporated | 2835 |
11 |
| BASF SE | 19740 |
8 |
| Uop LLC | 4083 |
8 |
| Massachusetts Institute of Technology | 9795 |
6 |
| Siemens AG | 24990 |
5 |
| ExxonMobil Chemical Patents Inc. | 4286 |
4 |
| Dow Global Technologies LLC | 10147 |
4 |
| Alfa Laval Corporate AB | 1265 |
4 |
| Covestro Deutschland AG | 2429 |
4 |
| Kurita Water Industries Ltd. | 1110 |
4 |
| Yara International ASA | 753 |
4 |
| Evonik Operations GmbH | 3879 |
4 |
| Blue Planet Systems Corporation | 65 |
4 |
| LG Chem, Ltd. | 17205 |
3 |
| ExxonMobil Research And Engineering Company | 2830 |
3 |
| BASF AG | 1258 |
3 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
3 |
| Other owners | 323 |