- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 35/153 - Anti-leakage or anti-return valves
Patent holdings for IPC class B01D 35/153
Total number of patents in this class: 537
10-year publication summary
|
41
|
66
|
59
|
53
|
45
|
28
|
53
|
28
|
14
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MANN+HUMMEL GmbH | 1726 |
63 |
| MAHLE International GmbH | 2705 |
46 |
| Donaldson Company, Inc. | 1574 |
41 |
| Cummins Filtration IP, Inc. | 807 |
32 |
| Hengst SE | 135 |
25 |
| HYDAC Filtertechnik GmbH | 298 |
22 |
| Volvo Truck Corporation | 3106 |
18 |
| Caterpillar Inc. | 9166 |
15 |
| Solventum Intellectual Properties Company | 3311 |
13 |
| Haier US Appliance Solutions, Inc. | 3359 |
11 |
| Hengst SE & Co. KG | 23 |
11 |
| Baldwin Filters, Inc. | 240 |
7 |
| Parker-Hannifin Corporation | 1022 |
7 |
| Hengst GmbH & Co. KG | 57 |
6 |
| PENTAIR Filtration, Inc. | 12 |
6 |
| 3m Innovative Properties Company | 17957 |
5 |
| Cummins Filtration Inc. | 187 |
5 |
| Joma-Polytec Kunststofftechnik GmbH | 17 |
5 |
| Sogefi Filtration | 49 |
5 |
| Daimler AG | 3418 |
4 |
| Other owners | 190 |