- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01N - Gas-flow silencers or exhaust apparatus for machines or engines in general; gas-flow silencers or exhaust apparatus for internal-combustion engines
- F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
Patent holdings for IPC class F01N 3/08
Total number of patents in this class: 3154
10-year publication summary
|
280
|
315
|
296
|
226
|
265
|
145
|
130
|
104
|
80
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13086 |
398 |
| Isuzu Motors Limited | 2240 |
253 |
| Toyota Motor Corporation | 30455 |
140 |
| Johnson Matthey Public Limited Company | 1852 |
124 |
| Hino Motors, Ltd. | 345 |
72 |
| Umicore AG & Co. KG | 860 |
69 |
| Komatsu Ltd. | 4418 |
62 |
| Ford Global Technologies, LLC | 20070 |
56 |
| Yanmar Co., Ltd. | 1436 |
53 |
| Hyundai Motor Company | 20483 |
50 |
| Bosch Corporation | 393 |
46 |
| Cummins Emission Solutions, Inc. | 517 |
44 |
| BASF Corporation | 1823 |
43 |
| Cummins Inc. | 2474 |
41 |
| Shanghai Bixiufu Enterprise Management Co., Ltd. | 187 |
40 |
| Denso Corporation | 23769 |
39 |
| Honda Motor Co., Ltd. | 24866 |
36 |
| GM Global Technology Operations LLC | 14260 |
35 |
| Cataler Corporation | 563 |
35 |
| Hitachi Zosen Corporation | 621 |
33 |
| Other owners | 1485 |