- 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 3/22 - Control of additional air supply only, e.g. using by-passes or variable air pump drives
Patent holdings for IPC class F01N 3/22
Total number of patents in this class: 297
10-year publication summary
|
23
|
18
|
22
|
26
|
22
|
22
|
21
|
14
|
12
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12282 |
19 |
| Robert Bosch GmbH | 44445 |
18 |
| Ford Global Technologies, LLC | 21664 |
18 |
| Toyota Motor Corporation | 36544 |
15 |
| Pierburg GmbH | 479 |
14 |
| Vitesco Technologies GmbH | 2395 |
10 |
| Volkswagen AG | 7510 |
9 |
| Cummins Emission Solutions, Inc. | 588 |
8 |
| Mercedes-Benz Group AG | 5653 |
7 |
| Hyundai Motor Company | 25253 |
6 |
| Nissan Motor Co., Ltd. | 13127 |
5 |
| GM Global Technology Operations LLC | 16306 |
4 |
| Hitachi Zosen Corporation | 584 |
4 |
| RENAULT s.a.s. | 5347 |
4 |
| Garrett Transportation I Inc. | 307 |
4 |
| Yanmar Power Technology Co., Ltd. | 580 |
4 |
| Tennessee Propulsion Products, LLC | 31 |
4 |
| Honda Motor Co., Ltd. | 26702 |
3 |
| Deere & Company | 8258 |
3 |
| Bayerische Motoren Werke Aktiengesellschaft | 15559 |
3 |
| Other owners | 135 |