- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 33/72 - Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
Patent holdings for IPC class B01D 33/72
Total number of patents in this class: 77
10-year publication summary
|
6
|
9
|
5
|
9
|
10
|
7
|
11
|
5
|
2
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Xeros Limited | 137 |
7 |
| M-I L.L.C. | 815 |
6 |
| The Charles Machine Works, Inc. | 409 |
5 |
| Daritech, Inc. | 32 |
3 |
| Water Solutions Technology, LLC | 9 |
3 |
| A. Kayser Automotive Systems GmbH | 29 |
2 |
| BHS-Sonthofen GmbH | 42 |
2 |
| Danmarks Tekniske Universitet | 961 |
2 |
| Nijhuis Water Technology B.V. | 13 |
2 |
| Tianhua Institute of Chemical Machinery and Automation Co., Ltd. | 37 |
2 |
| Univenture, Inc., AKA Biobent Polymers | 6 |
2 |
| Valmet AB | 499 |
2 |
| Voith Patent GmbH | 2748 |
2 |
| Schellstede-lee Interests, LLC | 3 |
2 |
| ANDRITZ KMPT GmbH | 7 |
1 |
| CREA S.r.l. | 7 |
1 |
| Cubility AS | 39 |
1 |
| Dalian University of Technology | 1508 |
1 |
| Del Corporation | 11 |
1 |
| Herbold Meckesheim GmbH | 17 |
1 |
| Other owners | 29 |