- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 46/44 - Auxiliary equipment or operation thereof controlling filtration
Patent holdings for IPC class B01D 46/44
Total number of patents in this class: 879
10-year publication summary
|
88
|
79
|
75
|
109
|
123
|
119
|
73
|
82
|
69
|
41
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75910 |
36 |
| Microjet Technology Co., Ltd. | 461 |
31 |
| Donaldson Company, Inc. | 1606 |
27 |
| Samsung Electronics Co., Ltd. | 158605 |
22 |
| Coway Co., Ltd. | 792 |
21 |
| K&N Engineering, Inc. | 463 |
15 |
| 3m Innovative Properties Company | 17459 |
13 |
| MANN+HUMMEL GmbH | 1812 |
12 |
| Industrial Vacuum Transfer Services USA, LLC | 40 |
9 |
| Toyota Motor Corporation | 35992 |
8 |
| Illinois Tool Works Inc. | 11863 |
7 |
| Carl Freudenberg KG | 1494 |
7 |
| Dyson Technology Limited | 4023 |
7 |
| University of Houston System | 1124 |
7 |
| Robert Bosch GmbH | 44252 |
6 |
| Ford Global Technologies, LLC | 21582 |
6 |
| W. L. Gore & Associates, Inc. | 2726 |
6 |
| Cummins Inc. | 2648 |
6 |
| The Boeing Company | 20196 |
5 |
| Koninklijke Philips N.V. | 25978 |
5 |
| Other owners | 623 |