- 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 13/04 - Exhaust or silencing apparatus characterised by constructional features having two or more silencers in parallel, e.g. having interconnections for multi-cylinder engines
Patent holdings for IPC class F01N 13/04
Total number of patents in this class: 96
10-year publication summary
|
9
|
14
|
9
|
9
|
7
|
2
|
3
|
3
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ford Global Technologies, LLC | 20355 |
8 |
| Bayerische Motoren Werke Aktiengesellschaft | 14198 |
8 |
| Akrapovic d.d. | 16 |
8 |
| Tenneco Automotive Operating Company Inc. | 634 |
7 |
| Audi AG | 7327 |
5 |
| Caterpillar Inc. | 9397 |
4 |
| Volkswagen AG | 7303 |
3 |
| GE Global Sourcing LLC | 899 |
3 |
| Toyota Jidosha Kabushiki Kaisha | 902 |
3 |
| Hyundai Motor Company | 21349 |
2 |
| FCA US LLC | 3030 |
2 |
| MTU Friedrichshafen GmbH | 295 |
2 |
| Suzuki Motor Corporation | 1309 |
2 |
| Tenneco GmbH | 131 |
2 |
| Umicore AG & Co. KG | 854 |
2 |
| Purem GmbH, Formerly, Eberspächer Exhaust Technology GmbH | 304 |
2 |
| General Electric Company | 17066 |
1 |
| Honda Motor Co., Ltd. | 25118 |
1 |
| Corning Incorporated | 10169 |
1 |
| Emitec Gesellschaft für Emissionstechnologie mbH | 254 |
1 |
| Other owners | 29 |