- 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: 875
10-year publication summary
|
88
|
79
|
75
|
109
|
123
|
119
|
73
|
82
|
68
|
38
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75694 |
36 |
| Microjet Technology Co., Ltd. | 461 |
31 |
| Donaldson Company, Inc. | 1600 |
27 |
| Samsung Electronics Co., Ltd. | 157719 |
22 |
| Coway Co., Ltd. | 788 |
21 |
| K&N Engineering, Inc. | 461 |
14 |
| 3m Innovative Properties Company | 17478 |
13 |
| MANN+HUMMEL GmbH | 1808 |
12 |
| Industrial Vacuum Transfer Services USA, LLC | 40 |
9 |
| Toyota Motor Corporation | 35772 |
8 |
| Illinois Tool Works Inc. | 11863 |
7 |
| Carl Freudenberg KG | 1488 |
7 |
| Dyson Technology Limited | 3997 |
7 |
| University of Houston System | 1123 |
7 |
| Robert Bosch GmbH | 44160 |
6 |
| Ford Global Technologies, LLC | 21509 |
6 |
| W. L. Gore & Associates, Inc. | 2720 |
6 |
| Cummins Inc. | 2632 |
6 |
| The Boeing Company | 20160 |
5 |
| Koninklijke Philips N.V. | 25856 |
5 |
| Other owners | 620 |