- 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 3/28 - Construction of catalytic reactors
Patent holdings for IPC class F01N 3/28
Total number of patents in this class: 4709
10-year publication summary
|
400
|
398
|
409
|
402
|
329
|
319
|
248
|
216
|
153
|
106
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cataler Corporation | 571 |
231 |
| NGK Insulators, Ltd. | 5236 |
211 |
| Johnson Matthey Public Limited Company | 1768 |
177 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12369 |
159 |
| Ibiden Co., Ltd. | 1665 |
145 |
| Toyota Motor Corporation | 35772 |
138 |
| Cummins Emission Solutions, Inc. | 579 |
126 |
| BASF Mobile Emissions Catalysts LLC | 432 |
106 |
| Umicore AG & Co. KG | 853 |
92 |
| Tenneco Automotive Operating Company Inc. | 455 |
83 |
| Honda Motor Co., Ltd. | 26025 |
80 |
| Tenneco (Suzhou) Emission System Co., Ltd. | 143 |
80 |
| Caterpillar Inc. | 10267 |
79 |
| Purem GmbH, Formerly, Eberspächer Exhaust Technology GmbH | 309 |
79 |
| Vitesco Technologies GmbH | 2397 |
75 |
| Yanmar Co., Ltd. | 1347 |
74 |
| Corning Incorporated | 10504 |
70 |
| Faurecia Emissions Control Technologies, USA, LLC | 157 |
65 |
| Isuzu Motors Limited | 2323 |
61 |
| Komatsu Ltd. | 4723 |
58 |
| Other owners | 2520 |