- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01L - Cyclically operating valves for machines or engines
- F01L 3/08 - Valve guidesSealing of valve stem, e.g. sealing by lubricant
Patent holdings for IPC class F01L 3/08
Total number of patents in this class: 162
10-year publication summary
|
22
|
22
|
16
|
15
|
15
|
13
|
12
|
7
|
5
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2219 |
16 |
| Caterpillar Inc. | 9548 |
8 |
| Volvo Truck Corporation | 3401 |
8 |
| Eaton Intelligent Power Limited | 5983 |
8 |
| Bleistahl-Produktions GmbH & Co KG. | 19 |
7 |
| Dana Automotive Systems Group, LLC | 431 |
6 |
| Freudenberg Sealing Technologies S.A.S. di Externa Italia S.r.l.u | 21 |
5 |
| Ford Global Technologies, LLC | 20570 |
4 |
| Aktiebolaget SKF | 2945 |
4 |
| MAHLE International GmbH | 2770 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8715 |
3 |
| Nissan Motor Co., Ltd. | 12484 |
3 |
| Jaguar Land Rover Limited | 4738 |
3 |
| TPR Co., Ltd. | 160 |
3 |
| AI Alpine US Bidco Inc. | 103 |
3 |
| Resonac Corporation | 2800 |
3 |
| Honda Motor Co., Ltd. | 25251 |
2 |
| GM Global Technology Operations LLC | 15042 |
2 |
| Hyundai Motor Company | 21987 |
2 |
| Daikin Industries, Ltd. | 9995 |
2 |
| Other owners | 66 |