- 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 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids
Patent holdings for IPC class F01N 3/04
Total number of patents in this class: 564
10-year publication summary
|
45
|
54
|
50
|
61
|
36
|
37
|
28
|
17
|
23
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fuji Electric Co., Ltd. | 5548 |
22 |
| Yamaha Motor Co., Ltd. | 2834 |
21 |
| Brunswick Corporation | 1508 |
16 |
| Wartsila Finland Oy | 758 |
16 |
| Caterpillar Inc. | 10343 |
15 |
| Alfa Laval Corporate AB | 1348 |
14 |
| Mitsubishi Heavy Industries, Ltd. | 9252 |
12 |
| Toyota Motor Corporation | 36389 |
11 |
| Ford Global Technologies, LLC | 21645 |
9 |
| PanAsia Co., Ltd. | 121 |
9 |
| Japan Engine Corporation | 74 |
8 |
| Hyundai Motor Company | 25119 |
7 |
| Continental Automotive GmbH | 4409 |
7 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12301 |
7 |
| Vitesco Technologies GmbH | 2396 |
7 |
| Honda Motor Co., Ltd. | 26657 |
6 |
| GM Global Technology Operations LLC | 16255 |
6 |
| MAHLE International GmbH | 2929 |
6 |
| Tenneco Automotive Operating Company Inc. | 451 |
6 |
| Yara Marine Technologies AS | 11 |
6 |
| Other owners | 353 |