- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 33/50 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
Patent holdings for IPC class B01D 33/50
Total number of patents in this class: 137
10-year publication summary
|
7
|
9
|
15
|
13
|
13
|
7
|
12
|
8
|
11
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Veolia Water Solutions & Technologies Support | 544 |
23 |
| Evoqua Water Technologies LLC | 903 |
13 |
| B.V. Scheepswerf Damen Gorinchem | 8 |
3 |
| Nuove Energie S.r.l. | 16 |
3 |
| Filter Art LTD. | 6 |
3 |
| O.m.it S.r.l. | 3 |
3 |
| Shell Internationale Research Maatschappij B.V. | 3724 |
2 |
| Ant Corporation | 4 |
2 |
| Daritech, Inc. | 37 |
2 |
| Huber SE | 97 |
2 |
| Lenzing Aktiengesellschaft | 523 |
2 |
| Next Generation Analytics GmbH | 58 |
2 |
| Passavant-Geiger GmbH | 23 |
2 |
| Safe Foods Corporation | 79 |
2 |
| Essa corp. | 3 |
2 |
| Mecana Umwelttechnik GmbH | 11 |
2 |
| Cameron Farms Hutterite Colony | 4 |
2 |
| GRENEX Limited | 8 |
2 |
| Mecana AG | 12 |
2 |
| General Electric Company | 17794 |
1 |
| Other owners | 62 |