- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 35/31 - Filter housing constructions including arrangements for environmental protection, e.g. pressure resisting features
Patent holdings for IPC class B01D 35/31
Total number of patents in this class: 61
10-year publication summary
|
7
|
3
|
8
|
5
|
7
|
3
|
2
|
4
|
3
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| HYDAC Filtertechnik GmbH | 296 |
5 |
| MANN+HUMMEL GmbH | 1771 |
4 |
| Samsung Electronics Co., Ltd. | 148077 |
3 |
| Cummins Filtration Inc. | 199 |
3 |
| Pall Corporation | 335 |
3 |
| A.L. Filter Co. Limited | 3 |
2 |
| Energy Recovery, Inc. | 180 |
2 |
| Entegris, Inc. | 1901 |
2 |
| MAHLE International GmbH | 2810 |
2 |
| Parker-Hannifin Corporation | 996 |
2 |
| Volvo Truck Corporation | 3487 |
2 |
| Robert Bosch GmbH | 42861 |
1 |
| BASF AG | 187 |
1 |
| Ford Global Technologies, LLC | 20769 |
1 |
| Caterpillar Inc. | 9659 |
1 |
| Audi AG | 7381 |
1 |
| Bel-Art Products, Inc. | 10 |
1 |
| CLARCOR Inc. | 58 |
1 |
| Coavis | 80 |
1 |
| Cummins Emission Solutions, Inc. | 549 |
1 |
| Other owners | 22 |