- 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 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
Patent holdings for IPC class F01N 3/02
Total number of patents in this class: 1758
10-year publication summary
|
130
|
108
|
81
|
98
|
64
|
83
|
45
|
37
|
41
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
156 |
| Isuzu Motors Limited | 2158 |
98 |
| Ibiden Co., Ltd. | 1724 |
91 |
| NGK Insulators, Ltd. | 4589 |
79 |
| Yanmar Co., Ltd. | 1479 |
65 |
| Ford Global Technologies, LLC | 19702 |
50 |
| GM Global Technology Operations LLC | 13620 |
44 |
| Toyota Motor Corporation | 28582 |
34 |
| Hino Motors, Ltd. | 370 |
34 |
| Cummins Inc. | 2369 |
33 |
| Hitachi Construction Machinery Co., Ltd. | 2498 |
29 |
| Caterpillar Inc. | 8877 |
29 |
| Hyundai Motor Company | 19021 |
29 |
| Honda Motor Co., Ltd. | 24537 |
26 |
| Komatsu Ltd. | 4265 |
25 |
| Hitachi Metals, Ltd. | 2175 |
22 |
| Cummins Emission Solutions, Inc. | 480 |
21 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
19 |
| Sumitomo Chemical Company, Limited | 8808 |
19 |
| Purem GmbH, Formerly, Eberspächer Exhaust Technology GmbH | 288 |
18 |
| Other owners | 837 |