- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 3/20 - Bubble caps; Risers for vapour; Discharge pipes for liquid
Patent holdings for IPC class B01D 3/20
Total number of patents in this class: 159
10-year publication summary
|
15
|
18
|
13
|
12
|
8
|
9
|
14
|
5
|
4
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 19740 |
13 |
| IFP Energies Nouvelles | 2717 |
13 |
| Sulzer Management AG | 613 |
10 |
| Uop LLC | 4083 |
7 |
| Koch-Glitsch, LP | 204 |
7 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
6 |
| Shell Oil Company | 2196 |
6 |
| Dow Technology Investments LLC | 270 |
6 |
| Linde Aktiengesellschaft | 1600 |
5 |
| Massachusetts Institute of Technology | 9795 |
4 |
| Casale SA | 572 |
4 |
| ExxonMobil Upstream Research Company | 2525 |
4 |
| Sulzer Chemtech AG | 69 |
4 |
| Argonide Corporation | 14 |
3 |
| King Fahd University of Petroleum and Minerals | 779 |
3 |
| Praxair Technology, Inc. | 1367 |
3 |
| Statoil Petroleum AS | 555 |
3 |
| Total SA | 520 |
3 |
| AMT International, Inc. | 47 |
2 |
| Beijing Zehua Chemical Engineering Co., Ltd. | 19 |
2 |
| Other owners | 51 |