- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 35/157 - Flow control valvesDamping or calibrated passages
Patent holdings for IPC class B01D 35/157
Total number of patents in this class: 352
10-year publication summary
|
22
|
39
|
32
|
31
|
39
|
43
|
41
|
37
|
32
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Coway Co., Ltd. | 710 |
26 |
| MANN+HUMMEL GmbH | 1742 |
14 |
| Cummins Filtration IP, Inc. | 808 |
11 |
| Donaldson Company, Inc. | 1574 |
11 |
| Samsung Electronics Co., Ltd. | 141952 |
9 |
| LG Electronics Inc. | 71838 |
8 |
| Caterpillar Inc. | 9347 |
8 |
| KX Technologies LLC | 151 |
8 |
| Spectrum Brands, Inc. | 896 |
8 |
| Hamilton Sundstrand Corporation | 4795 |
7 |
| HYDAC Filtertechnik GmbH | 296 |
7 |
| Haier US Appliance Solutions, Inc. | 3482 |
6 |
| Coway Co., Ltd. | 13 |
5 |
| Brita GmbH | 99 |
4 |
| M.P. Filtri S.p.A. | 27 |
4 |
| C.C. Jensen A/S | 48 |
4 |
| Aqua Tru, LLC | 21 |
3 |
| Aquis Wasser-Luft-Systeme GmbH, Lindau, Zweigniederlassung Rebstein | 40 |
3 |
| Cummins Inc. | 2530 |
3 |
| Pall Corporation | 334 |
3 |
| Other owners | 200 |