- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01L - Cyclically operating valves for machines or engines
- F01L 3/04 - Coated valve members or valve seats
Patent holdings for IPC class F01L 3/04
Total number of patents in this class: 122
10-year publication summary
|
14
|
14
|
13
|
9
|
13
|
18
|
6
|
11
|
4
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nissan Motor Co., Ltd. | 12249 |
15 |
| NITTAN Corporation | 50 |
10 |
| MAHLE International GmbH | 2670 |
9 |
| Caterpillar Inc. | 8877 |
6 |
| Nittan Valve Co., Ltd. | 138 |
6 |
| Toyota Motor Corporation | 28582 |
5 |
| Fukuda Metal Foil & Powder Co., Ltd. | 66 |
5 |
| MAN Diesel & Turbo, Filial af MAN Diesel & Turbo SE, Tyskland | 40 |
5 |
| Cummins Inc. | 2369 |
4 |
| GM Global Technology Operations LLC | 13620 |
3 |
| Ibiden Co., Ltd. | 1724 |
3 |
| Fuji Oozx Inc. | 24 |
3 |
| MAHLE Metal Leve S/A | 160 |
3 |
| Markisches Werk GmbH | 15 |
3 |
| Eaton Intelligent Power Limited | 6113 |
3 |
| Ford Global Technologies, LLC | 19702 |
2 |
| NGK Insulators, Ltd. | 4589 |
2 |
| Bleistahl-Produktions GmbH & Co KG. | 22 |
2 |
| Federal-Mogul Valvetrain GmbH | 60 |
2 |
| Jaguar Land Rover Limited | 4390 |
2 |
| Other owners | 29 |