- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 50/20 - Combinations of devices covered by groups and
Patent holdings for IPC class B01D 50/20
Total number of patents in this class: 167
10-year publication summary
|
1
|
1
|
0
|
3
|
7
|
23
|
26
|
53
|
39
|
10
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Donaldson Company, Inc. | 1513 |
15 |
| Omachron Intellectual Property Inc. | 869 |
12 |
| MANN+HUMMEL GmbH | 1682 |
10 |
| LG Electronics Inc. | 69257 |
5 |
| Caterpillar Inc. | 8877 |
5 |
| Cummins Filtration IP, Inc. | 812 |
4 |
| Filtration Technology Corporation | 47 |
4 |
| Husqvarna AB | 2824 |
3 |
| Pall Corporation | 392 |
3 |
| Techtronic Industries Co. Ltd. | 103 |
3 |
| Calandra Resources, Inc. | 7 |
3 |
| NeuFilter GmbH | 22 |
3 |
| Aisan Kogyo Kabushiki Kaisha | 722 |
2 |
| BofA International Limited | 3 |
2 |
| Brooks Equipment Company, LLC | 36 |
2 |
| Duerr Systems AG | 175 |
2 |
| Enverid Systems, Inc. | 80 |
2 |
| ETO Magnetic GmbH | 247 |
2 |
| JPL Global, LLC | 85 |
2 |
| Milaebo Co., Ltd. | 20 |
2 |
| Other owners | 81 |