- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 37/04 - Controlling the filtration
Patent holdings for IPC class B01D 37/04
Total number of patents in this class: 359
10-year publication summary
|
37
|
24
|
44
|
40
|
32
|
32
|
27
|
25
|
23
|
25
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Coway Co., Ltd. | 791 |
13 |
| Repligen Corporation | 299 |
8 |
| Cummins Filtration IP, Inc. | 584 |
7 |
| LG Electronics Inc. | 75855 |
6 |
| Samsung Electronics Co., Ltd. | 158442 |
5 |
| DEKA Products Limited Partnership | 1897 |
5 |
| Donaldson Company, Inc. | 1608 |
5 |
| HYDAC Filtertechnik GmbH | 288 |
5 |
| RPM Industries, LLC | 80 |
5 |
| Coway Co., Ltd. | 13 |
5 |
| FUJIFILM Corporation | 30594 |
4 |
| Tokyo Electron Limited | 13871 |
4 |
| Ecolab USA Inc. | 5813 |
4 |
| Nalco Company | 535 |
4 |
| ElectroSea, LLC | 49 |
4 |
| Alcoa Canada Co | 6 |
4 |
| Cambridge Crops, Inc. | 32 |
4 |
| Caterpillar Inc. | 10280 |
3 |
| Xiaomi Inc. | 1746 |
3 |
| Boll & Kirch Filterbau GmbH | 36 |
3 |
| Other owners | 258 |