- All sections
- B - Performing operations; transporting
- 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: 59
10-year publication summary
|
7
|
7
|
3
|
8
|
5
|
7
|
3
|
2
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| HYDAC Filtertechnik GmbH | 294 |
5 |
| MANN+HUMMEL GmbH | 1682 |
4 |
| Samsung Electronics Co., Ltd. | 131630 |
3 |
| Pall Corporation | 392 |
3 |
| A.L. Filter Co. Limited | 3 |
2 |
| Cummins Filtration Inc. | 171 |
2 |
| Energy Recovery, Inc. | 168 |
2 |
| MAHLE International GmbH | 2670 |
2 |
| Parker-Hannifin Corporation | 999 |
2 |
| Volvo Truck Corporation | 2764 |
2 |
| Robert Bosch GmbH | 40953 |
1 |
| BASF AG | 1258 |
1 |
| Ford Global Technologies, LLC | 19702 |
1 |
| Caterpillar Inc. | 8877 |
1 |
| Audi AG | 7153 |
1 |
| Bel-Art Products, Inc. | 14 |
1 |
| CLARCOR Inc. | 57 |
1 |
| Coavis | 67 |
1 |
| Cummins Emission Solutions, Inc. | 480 |
1 |
| Donaldson Company, Inc. | 1513 |
1 |
| Other owners | 22 |