- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 33/073 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
Patent holdings for IPC class B01D 33/073
Total number of patents in this class: 127
10-year publication summary
|
13
|
9
|
8
|
14
|
15
|
12
|
21
|
12
|
7
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Andritz Inc. | 332 |
5 |
| Valmet AB | 505 |
5 |
| Whirlpool Corporation | 4419 |
4 |
| BHS-Sonthofen GmbH | 41 |
3 |
| Danmarks Tekniske Universitet | 969 |
3 |
| Huber SE | 99 |
3 |
| Omega Liquid Waste Solutions Inc. | 7 |
3 |
| Greatpyr Resources LLC | 3 |
3 |
| ANDRITZ KMPT GmbH | 7 |
2 |
| BP Corporation North America Inc. | 744 |
2 |
| Contech Engineered Solutions LLC | 278 |
2 |
| Cummins Filtration IP, Inc. | 808 |
2 |
| Evoqua Water Technologies LLC | 918 |
2 |
| Lenzing Aktiengesellschaft | 522 |
2 |
| Metalquimia, S.A. | 35 |
2 |
| Nordischer Maschinenbau Rud. Baader GmbH + Co. KG | 369 |
2 |
| Outotec (Finland) Oy | 480 |
2 |
| Technical University of Denmark | 158 |
2 |
| Nanotech Energy, Inc. | 52 |
2 |
| GL&V USA Inc. | 5 |
2 |
| Other owners | 74 |