- All sections
- B - Performing operations; transporting
- 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: 738
10-year publication summary
|
42
|
56
|
88
|
79
|
75
|
109
|
120
|
117
|
70
|
29
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 69257 |
32 |
| Donaldson Company, Inc. | 1513 |
23 |
| 3m Innovative Properties Company | 18406 |
19 |
| Microjet Technology Co., Ltd. | 344 |
19 |
| Samsung Electronics Co., Ltd. | 131630 |
17 |
| Coway Co., Ltd. | 649 |
17 |
| MANN+HUMMEL GmbH | 1682 |
11 |
| Toyota Motor Corporation | 28582 |
8 |
| Illinois Tool Works Inc. | 11152 |
7 |
| Carl Freudenberg KG | 1346 |
7 |
| Robert Bosch GmbH | 40953 |
6 |
| Ford Global Technologies, LLC | 19702 |
6 |
| The Boeing Company | 19843 |
5 |
| Koninklijke Philips N.V. | 22975 |
5 |
| Life Technologies Corporation | 3068 |
5 |
| Carrier Corporation | 4759 |
5 |
| Cummins Filtration IP, Inc. | 812 |
5 |
| Cummins Inc. | 2369 |
5 |
| International Business Machines Corporation | 60644 |
4 |
| Hewlett-Packard Development Company, L.P. | 28538 |
4 |
| Other owners | 528 |