- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 21/34 - Controlling the feed distributionControlling the liquid level
Patent holdings for IPC class B01D 21/34
Total number of patents in this class: 234
10-year publication summary
|
26
|
31
|
27
|
18
|
29
|
18
|
19
|
23
|
10
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| DSM IP Assets B.V. | 5659 |
5 |
| Terumo BCT, Inc. | 441 |
5 |
| Vulco, S.A. | 50 |
5 |
| RIT Venture Fund I, LLC | 9 |
5 |
| Snyder, Steve | 9 |
5 |
| Terry, David | 10 |
5 |
| Westbrook, Greg | 9 |
5 |
| Evoqua Water Technologies LLC | 914 |
4 |
| ITT Bornemann GmbH | 27 |
4 |
| Nanoshell Company, LLC | 15 |
4 |
| Saudi Arabian Oil Company | 12858 |
4 |
| Infinite Automated Solutions LLC | 5 |
4 |
| Batfer Investment S.A. | 30 |
4 |
| United Conveyor LLC | 31 |
4 |
| Halliburton Energy Services, Inc. | 20749 |
3 |
| Expro North Sea Limited | 227 |
3 |
| Fenwal, Inc. | 659 |
3 |
| Invent Umwelt-und Verfahrenstechnik AG | 130 |
3 |
| Liberty Evans, LLC | 11 |
3 |
| Micro Motion, Inc. | 1017 |
3 |
| Other owners | 153 |