- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 46/54 - Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
Patent holdings for IPC class B01D 46/54
Total number of patents in this class: 357
10-year publication summary
|
22
|
20
|
33
|
35
|
52
|
31
|
41
|
23
|
23
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nitto Denko Corporation | 8516 |
19 |
| Donaldson Company, Inc. | 1599 |
12 |
| Hollingsworth & Vose Company | 301 |
12 |
| W. L. Gore & Associates, Inc. | 2718 |
10 |
| Daikin Industries, Ltd. | 10457 |
9 |
| Carl Freudenberg KG | 1483 |
6 |
| 3m Innovative Properties Company | 17497 |
5 |
| InnovaPrep LLC | 65 |
5 |
| Weifang Goertek Microelectronics Co., Ltd. | 158 |
5 |
| E. I. du Pont de Nemours and Company | 3564 |
4 |
| Entegris, Inc. | 2003 |
4 |
| MAHLE International GmbH | 2906 |
4 |
| Nanjing Tech University | 295 |
4 |
| China University of Petroleum (Beijing) | 301 |
3 |
| Gudeng Precision Industrial Co., Ltd. | 171 |
3 |
| MANN+HUMMEL GmbH | 1811 |
3 |
| Microjet Technology Co., Ltd. | 461 |
3 |
| Numatic International Limited, | 175 |
3 |
| Ufi Innovation Center S.r.l. | 74 |
3 |
| Nxtnano, LLC | 5 |
3 |
| Other owners | 237 |