- All sections
- B - Performing operationstransporting
- B03C - Magnetic or electrostatic separation of solid materials from solid materials or fluidsseparation by high-voltage electric fields
- B03C 3/28 - Plant or installations without electricity supply, e.g. using electrets
Patent holdings for IPC class B03C 3/28
Total number of patents in this class: 150
10-year publication summary
|
14
|
13
|
12
|
8
|
7
|
18
|
13
|
14
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 3m Innovative Properties Company | 17957 |
18 |
| Toyobo Co., Ltd. | 2423 |
17 |
| Toray Industries, Inc. | 6855 |
16 |
| Yupo Corporation | 229 |
6 |
| Mitsubishi Electric Corporation | 44851 |
5 |
| Japan Vilene Company, Ltd. | 65 |
5 |
| Hollingsworth & Vose Company | 283 |
4 |
| Murata Manufacturing Co., Ltd. | 23702 |
3 |
| JNC Corporation | 1532 |
3 |
| Nanogate AG | 17 |
3 |
| SWM Luxembourg s.a.r.l. | 52 |
3 |
| Toyobo MC Corporation | 307 |
3 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
2 |
| Empire Technology Development LLC | 1622 |
2 |
| DelStar Technologies Inc. | 83 |
2 |
| Donaldson Company, Inc. | 1574 |
2 |
| Dyson Technology Limited | 3422 |
2 |
| Elfi Elektrofilter AB | 3 |
2 |
| Environmental Management Confederation, Inc. | 58 |
2 |
| JNC Fibers Corporation | 50 |
2 |
| Other owners | 48 |