- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 3/22 - Fractionating columns in which vapour bubbles through liquid with horizontal sieve plates or gridsConstruction of sieve plates or grids
Patent holdings for IPC class B01D 3/22
Total number of patents in this class: 129
10-year publication summary
|
14
|
10
|
10
|
11
|
11
|
4
|
6
|
0
|
8
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21306 |
12 |
| Uop LLC | 4390 |
10 |
| Koch-Glitsch, LP | 197 |
8 |
| Dow Technology Investments LLC | 279 |
6 |
| IFP Energies Nouvelles | 3104 |
6 |
| Gradiant Corporation | 150 |
5 |
| Praxair Technology, Inc. | 1215 |
5 |
| SABIC Global Technologies B.V. | 4611 |
5 |
| Dow Global Technologies LLC | 10994 |
4 |
| Linde Aktiengesellschaft | 1419 |
4 |
| LG Chem, Ltd. | 17950 |
3 |
| Saipem S.p.A. | 529 |
3 |
| Sulzer Management AG | 712 |
3 |
| Shell Internationale Research Maatschappij B.V. | 3394 |
2 |
| Shell Oil Company | 2068 |
2 |
| Asahi Kasei Kabushiki Kaisha | 2840 |
2 |
| Crown Iron Works Company | 41 |
2 |
| Doosan Lentjes GmbH | 49 |
2 |
| RVT Process Equipment GmbH | 16 |
2 |
| Solvay SA | 947 |
2 |
| Other owners | 41 |