- 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: 296
10-year publication summary
|
18
|
21
|
12
|
23
|
21
|
29
|
23
|
17
|
18
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Donaldson Company, Inc. | 1603 |
32 |
| Alstom Technology Ltd | 1093 |
5 |
| Sintokogio, Ltd. | 1163 |
5 |
| EOS GmbH Electro Optical Systems | 412 |
4 |
| Korea Institute of Energy Research | 862 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8813 |
3 |
| W. L. Gore & Associates, Inc. | 2731 |
3 |
| Dust Company, Inc. | 18 |
3 |
| Milwaukee Electric Tool Corporation | 4490 |
3 |
| Outotec Oyj | 275 |
3 |
| Schenck Process LLC | 68 |
3 |
| Seoul Viosys Co., Ltd. | 1480 |
3 |
| Taikisha Ltd. | 120 |
3 |
| Venturedyne, Ltd. | 45 |
3 |
| K&N Engineering, Inc. | 436 |
3 |
| Akros Trading Co. Ltd. | 5 |
3 |
| Zhejiang Hongsheng New Material Technology Group Co., Ltd | 5 |
3 |
| 3m Innovative Properties Company | 17770 |
2 |
| LG Chem, Ltd. | 17680 |
2 |
| Boehringer Ingelheim Pharma GmbH & Co. Kg | 536 |
2 |
| Other owners | 204 |