- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 29/68 - 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 29/68
Total number of patents in this class: 229
10-year publication summary
|
20
|
15
|
15
|
19
|
16
|
20
|
25
|
14
|
26
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| HYDAC Process Technology GmbH | 89 |
19 |
| Inheriting Earth Limited | 27 |
13 |
| Alfa Laval Corporate AB | 1302 |
8 |
| Amiad Water Systems Ltd. | 49 |
8 |
| Boll & Kirch Filterbau GmbH | 36 |
7 |
| PanAsia Co., Ltd. | 113 |
7 |
| Fuji Filter Manufacturing Co., Ltd. | 55 |
5 |
| LG Chem, Ltd. | 17549 |
4 |
| Aqua-Aerobic Systems, Inc. | 88 |
4 |
| Pentair Water Pool and Spa, Inc. | 443 |
4 |
| Mosshydro AS | 5 |
4 |
| Lenzing Aktiengesellschaft | 521 |
3 |
| Nordson Corporation | 1203 |
3 |
| Ozono Polaris, S.A. de C.V. | 7 |
3 |
| Eaton Corporation | 1820 |
2 |
| Alfa Laval Moatti | 9 |
2 |
| Cameron International Corporation | 1327 |
2 |
| Covestro LLC | 580 |
2 |
| Filtration Technology Corporation | 48 |
2 |
| Grayl Inc. | 62 |
2 |
| Other owners | 125 |