- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 33/23 - Construction of discs or component sectors thereof
Patent holdings for IPC class B01D 33/23
Total number of patents in this class: 133
10-year publication summary
|
14
|
16
|
14
|
9
|
6
|
7
|
8
|
8
|
4
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 922 |
14 |
| Outotec (Finland) Oy | 461 |
13 |
| Veolia Water Solutions & Technologies Support | 534 |
13 |
| Valmet Technologies Oy | 289 |
8 |
| Voith Patent GmbH | 2762 |
6 |
| Gaudfrin | 21 |
5 |
| Sulzer Management AG | 685 |
4 |
| Filter Art LTD. | 6 |
4 |
| Yucheon Enviro Co., Ltd. | 4 |
4 |
| 3m Innovative Properties Company | 17719 |
3 |
| Andritz AG | 235 |
3 |
| Nordic Water Products AB | 47 |
3 |
| Ziemann Holvrieka GmbH | 29 |
3 |
| Metso Finland Oy | 621 |
3 |
| Illinois Tool Works Inc. | 11580 |
2 |
| Huber SE | 103 |
2 |
| Reinhold Wesselmann GmbH | 2 |
2 |
| GL&V Luxembourg S.à.r.l. | 22 |
2 |
| Invent Environmental Technologies, Inc. | 2 |
2 |
| Advanced Filtration Technologies Inc. | 2 |
2 |
| Other owners | 35 |