- 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: 131
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 | 21171 |
12 |
| Uop LLC | 4336 |
10 |
| Koch-Glitsch, LP | 198 |
10 |
| Dow Technology Investments LLC | 280 |
6 |
| IFP Energies Nouvelles | 3043 |
6 |
| Gradiant Corporation | 147 |
5 |
| Praxair Technology, Inc. | 1234 |
5 |
| SABIC Global Technologies B.V. | 4517 |
5 |
| Dow Global Technologies LLC | 10858 |
4 |
| Linde Aktiengesellschaft | 1431 |
4 |
| LG Chem, Ltd. | 17903 |
3 |
| Saipem S.p.A. | 525 |
3 |
| Sulzer Management AG | 699 |
3 |
| Shell Internationale Research Maatschappij B.V. | 3434 |
2 |
| Shell Oil Company | 2084 |
2 |
| Asahi Kasei Kabushiki Kaisha | 2808 |
2 |
| Crown Iron Works Company | 41 |
2 |
| Doosan Lentjes GmbH | 49 |
2 |
| RVT Process Equipment GmbH | 16 |
2 |
| Solvay SA | 957 |
2 |
| Other owners | 41 |