- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 46/04 - Cleaning filters
Patent holdings for IPC class B01D 46/04
Total number of patents in this class: 297
10-year publication summary
|
24
|
13
|
23
|
24
|
31
|
25
|
19
|
22
|
12
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Donaldson Company, Inc. | 1597 |
32 |
| Sintokogio, Ltd. | 1186 |
5 |
| Alstom Technology Ltd | 1057 |
4 |
| EOS GmbH Electro Optical Systems | 428 |
4 |
| Korea Institute of Energy Research | 885 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 9042 |
3 |
| W. L. Gore & Associates, Inc. | 2714 |
3 |
| Dust Company, Inc. | 19 |
3 |
| Milwaukee Electric Tool Corporation | 4857 |
3 |
| Outotec Oyj | 237 |
3 |
| Schenck Process LLC | 57 |
3 |
| Seoul Viosys Co., Ltd. | 1531 |
3 |
| Taikisha Ltd. | 125 |
3 |
| Venturedyne, Ltd. | 45 |
3 |
| K&N Engineering, Inc. | 454 |
3 |
| Simatek A/S | 12 |
3 |
| Akros Trading Co. Ltd. | 5 |
3 |
| Zhejiang Hongsheng New Material Technology Group Co., Ltd | 5 |
3 |
| 3m Innovative Properties Company | 17494 |
2 |
| LG Chem, Ltd. | 17879 |
2 |
| Other owners | 205 |