- All sections
- B - Performing operations; transporting
- 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: 2207
10-year publication summary
161
|
165
|
228
|
210
|
185
|
228
|
208
|
211
|
173
|
56
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Donaldson Company, Inc. | 1513 |
361 |
MANN+HUMMEL GmbH | 1682 |
317 |
3m Innovative Properties Company | 18406 |
93 |
Baldwin Filters, Inc. | 257 |
55 |
K&N Engineering, Inc. | 405 |
44 |
Cummins Filtration IP, Inc. | 812 |
42 |
Carl Freudenberg KG | 1346 |
38 |
Daikin Industries, Ltd. | 9495 |
37 |
Nitto Denko Corporation | 7879 |
34 |
Camfil AB | 226 |
34 |
MAHLE International GmbH | 2670 |
34 |
Parker-Hannifin Corporation | 999 |
33 |
Caterpillar Inc. | 8877 |
23 |
Hollingsworth & Vose Company | 274 |
22 |
Parker Intangibles LLC | 1237 |
21 |
Pall Corporation | 392 |
19 |
BHA Altair, LLC | 104 |
16 |
Samsung Electronics Co., Ltd. | 131630 |
15 |
Nippon Muki Co., Ltd. | 26 |
15 |
Astrin Biosciences, Inc. | 24 |
15 |
Other owners | 939 |