- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 3/32 - Other features of fractionating columns
Patent holdings for IPC class B01D 3/32
Total number of patents in this class: 591
10-year publication summary
|
44
|
42
|
66
|
62
|
73
|
42
|
59
|
52
|
49
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17205 |
49 |
| Uop LLC | 4083 |
44 |
| Koch-Glitsch, LP | 204 |
32 |
| Saudi Arabian Oil Company | 11322 |
26 |
| BASF SE | 19740 |
25 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
21 |
| Linde Aktiengesellschaft | 1600 |
18 |
| Sulzer Management AG | 613 |
14 |
| IFP Energies Nouvelles | 2717 |
12 |
| Asahi Kasei Chemicals Corporation | 809 |
11 |
| Praxair Technology, Inc. | 1367 |
11 |
| Hanwha Solutions Corporation | 572 |
9 |
| China Petroleum & Chemical Corporation | 1623 |
6 |
| ExxonMobil Upstream Research Company | 2525 |
6 |
| Sunteco Limited | 7 |
6 |
| Covestro Deutschland AG | 2429 |
5 |
| Neste Oil Oyj | 118 |
5 |
| Neste Oyj | 686 |
5 |
| Axens | 253 |
4 |
| Fluor Technologies Corporation | 410 |
4 |
| Other owners | 278 |