- 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 1/12 - Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally- or helically-shaped channels
Patent holdings for IPC class F01N 1/12
Total number of patents in this class: 42
10-year publication summary
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4
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3
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6
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7
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5
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3
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3
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2
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1
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Trustees of Boston University | 982 |
5 |
| Matsushou Co., Ltd. | 6 |
3 |
| The United States of America as represented by the Secretary of the Army | 1253 |
2 |
| Asta Co., Ltd. | 20 |
2 |
| Tenneco Automotive Operating Company Inc. | 458 |
2 |
| Polaris Capital Corporation | 36 |
2 |
| Ford Global Technologies, LLC | 21309 |
1 |
| Hyundai Motor Company | 23906 |
1 |
| Apex Brands, Inc. | 746 |
1 |
| GREE Electric Appliances, Inc. of Zhuhai | 3284 |
1 |
| Northwest Uld, Inc. | 11 |
1 |
| Orbital Australia Pty Ltd | 66 |
1 |
| Owens Corning Intellectual Capital, LLC | 1643 |
1 |
| PACCAR Inc | 1369 |
1 |
| Parafluidics LLC | 2 |
1 |
| Pridgeon & Clay, Inc. | 13 |
1 |
| Scania CV AB | 2404 |
1 |
| Teknologian Tutkimuskeskus VTT Oy | 569 |
1 |
| Universal Acoustic & Emission Technologies, Inc. | 2 |
1 |
| Vtx Technology LLC | 1 |
1 |
| Other owners | 12 |