- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 3/16 - Fractionating columns in which vapour bubbles through liquid
Patent holdings for IPC class B01D 3/16
Total number of patents in this class: 197
10-year publication summary
|
13
|
23
|
28
|
36
|
19
|
9
|
8
|
3
|
6
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koch-Glitsch, LP | 195 |
18 |
| BASF SE | 20933 |
14 |
| Sulzer Management AG | 662 |
10 |
| Gradiant Corporation | 130 |
9 |
| Uop LLC | 4244 |
8 |
| Asahi Kasei Chemicals Corporation | 681 |
4 |
| Celanese International Corporation | 909 |
4 |
| Eastman Chemical Company | 2217 |
4 |
| Linde Aktiengesellschaft | 1506 |
4 |
| North Carolina State University | 1561 |
4 |
| Perlemax Ltd | 11 |
4 |
| Praxair Technology, Inc. | 1298 |
4 |
| ExxonMobil Research And Engineering Company | 2573 |
3 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3975 |
3 |
| Woven Metal Products, Inc. | 19 |
3 |
| Sunlight Aerospace Inc. | 95 |
3 |
| Nantong Reason Environmental Protection Technology Co., Ltd. | 6 |
3 |
| LG Chem, Ltd. | 17632 |
2 |
| Sumitomo Chemical Company, Limited | 9046 |
2 |
| Dow Technology Investments LLC | 271 |
2 |
| Other owners | 89 |