- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material
Patent holdings for IPC class B01D 46/52
Total number of patents in this class: 2431
10-year publication summary
|
228
|
210
|
185
|
229
|
210
|
217
|
178
|
165
|
168
|
90
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MANN+HUMMEL GmbH | 1810 |
383 |
| Donaldson Company, Inc. | 1606 |
367 |
| 3m Innovative Properties Company | 17484 |
105 |
| Baldwin Filters, Inc. | 231 |
57 |
| K&N Engineering, Inc. | 463 |
53 |
| Daikin Industries, Ltd. | 10511 |
42 |
| Carl Freudenberg KG | 1492 |
36 |
| MAHLE International GmbH | 2918 |
35 |
| Parker-Hannifin Corporation | 1037 |
35 |
| Camfil AB | 236 |
34 |
| Nitto Denko Corporation | 8543 |
33 |
| Atmus Filtration IP Inc. | 275 |
28 |
| Parker Intangibles LLC | 1170 |
27 |
| Cummins Filtration IP, Inc. | 585 |
26 |
| Hollingsworth & Vose Company | 301 |
26 |
| Nippon Muki Co., Ltd. | 33 |
22 |
| Caterpillar Inc. | 10285 |
21 |
| Pall Corporation | 340 |
21 |
| Samsung Electronics Co., Ltd. | 158156 |
18 |
| BHA Altair, LLC | 95 |
16 |
| Other owners | 1046 |