- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 35/157 - Flow control valves; Damping or calibrated passages
Patent holdings for IPC class B01D 35/157
Total number of patents in this class: 337
10-year publication summary
|
24
|
22
|
39
|
32
|
30
|
39
|
43
|
40
|
35
|
17
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Coway Co., Ltd. | 649 |
22 |
| MANN+HUMMEL GmbH | 1682 |
13 |
| Cummins Filtration IP, Inc. | 812 |
11 |
| Donaldson Company, Inc. | 1513 |
10 |
| LG Electronics Inc. | 69257 |
8 |
| Caterpillar Inc. | 8877 |
8 |
| HYDAC Filtertechnik GmbH | 294 |
8 |
| Hamilton Sundstrand Corporation | 4525 |
7 |
| KX Technologies LLC | 158 |
7 |
| Spectrum Brands, Inc. | 916 |
7 |
| Samsung Electronics Co., Ltd. | 131630 |
6 |
| Brita GmbH | 109 |
6 |
| Haier US Appliance Solutions, Inc. | 3178 |
6 |
| Coway Co., Ltd. | 13 |
5 |
| M.P. Filtri S.p.A. | 23 |
4 |
| Aqua Tru, LLC | 18 |
3 |
| Aquis Wasser-Luft-Systeme GmbH, Lindau, Zweigniederlassung Rebstein | 44 |
3 |
| Cummins Inc. | 2369 |
3 |
| Pall Corporation | 392 |
3 |
| Stoma Ventures, LLC | 38 |
3 |
| Other owners | 194 |