- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F02F - Cylinders, pistons, or casings for combustion enginesarrangements of sealings in combustion engines
- F02F 3/12 - Pistons having surface coverings on piston heads
Patent holdings for IPC class F02F 3/12
Total number of patents in this class: 111
10-year publication summary
|
20
|
17
|
11
|
9
|
5
|
7
|
4
|
2
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Federal-Mogul Powertrain LLC | 270 |
12 |
| Mazda Motor Corporation | 3309 |
7 |
| Toyota Motor Corporation | 36092 |
6 |
| Hitachi Automotive Systems, Ltd. | 3954 |
6 |
| MAHLE International GmbH | 2919 |
5 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12323 |
5 |
| Isuzu Motors Limited | 2331 |
4 |
| Weichai Power Co., Ltd. | 311 |
4 |
| Akros Co., Ltd. | 16 |
3 |
| Federal-Mogul Nurnberg GmbH | 130 |
3 |
| Federal-Mogul LLC | 52 |
3 |
| Hyundai Motor Company | 24898 |
2 |
| Daimler AG | 2802 |
2 |
| Aisin Seiki Kabushiki Kaisha | 2153 |
2 |
| Kia Motors Corporation | 7715 |
2 |
| Art Metal Mfg. Co., Ltd. | 30 |
2 |
| Cummins Inc. | 2651 |
2 |
| KS Kolbenschmidt GmbH | 133 |
2 |
| University of Connecticut | 886 |
2 |
| Volvo Truck Corporation | 3951 |
2 |
| Other owners | 35 |