- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01N - Gas-flow silencers or exhaust apparatus for machines or engines in generalgas-flow silencers or exhaust apparatus for internal-combustion engines
- F01N 3/01 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators
Patent holdings for IPC class F01N 3/01
Total number of patents in this class: 194
10-year publication summary
|
10
|
12
|
10
|
6
|
90
|
18
|
17
|
1
|
1
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shanghai Bixiufu Enterprise Management Co., Ltd. | 187 |
85 |
| Emitec Gesellschaft für Emissionstechnologie mbH | 337 |
20 |
| Fuji Electric Co., Ltd. | 5006 |
6 |
| Toyota Motor Corporation | 30724 |
5 |
| RENAULT s.a.s. | 5418 |
5 |
| Usui Kokusai Sangyo Kaisha Limited | 74 |
5 |
| NGK Spark Plug Co., Ltd. | 899 |
3 |
| Alfa Laval Corporate AB | 1300 |
3 |
| Usui Co., Ltd. | 115 |
3 |
| Ford Global Technologies, LLC | 20196 |
2 |
| Continental Automotive GmbH | 5537 |
2 |
| Daihatsu Motor Co., Ltd. | 140 |
2 |
| Nova Institute of Technology, INC. | 2 |
2 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13012 |
2 |
| Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6129 |
2 |
| Nanomisttechnologies Co.,Ltd. | 22 |
2 |
| STEC Technology, Inc. | 3 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8592 |
1 |
| Sumitomo Electric Industries, Ltd. | 15094 |
1 |
| Hitachi, Ltd. | 15291 |
1 |
| Other owners | 40 |