- 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: 365
10-year publication summary
|
17
|
37
|
31
|
31
|
39
|
40
|
41
|
36
|
32
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Coway Co., Ltd. | 737 |
26 |
| MANN+HUMMEL GmbH | 1768 |
14 |
| Cummins Filtration IP, Inc. | 805 |
11 |
| Donaldson Company, Inc. | 1605 |
11 |
| Samsung Electronics Co., Ltd. | 147787 |
10 |
| Spectrum Brands, Inc. | 888 |
9 |
| LG Electronics Inc. | 73588 |
8 |
| Caterpillar Inc. | 9640 |
8 |
| KX Technologies LLC | 156 |
8 |
| M.P. Filtri S.p.A. | 34 |
8 |
| Hamilton Sundstrand Corporation | 4923 |
7 |
| Haier US Appliance Solutions, Inc. | 3706 |
7 |
| HYDAC Filtertechnik GmbH | 295 |
7 |
| Coway Co., Ltd. | 13 |
5 |
| Aqua Tru, LLC | 26 |
4 |
| Brita GmbH | 97 |
4 |
| Microfilter Co., Ltd. | 41 |
4 |
| C.C. Jensen A/S | 48 |
4 |
| Aquis Wasser-Luft-Systeme GmbH, Lindau, Zweigniederlassung Rebstein | 38 |
3 |
| Cummins Inc. | 2608 |
3 |
| Other owners | 204 |