- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01L - Cyclically operating valves for machines or engines
- F01L 3/10 - Connecting springs to valve members
Patent holdings for IPC class F01L 3/10
Total number of patents in this class: 103
10-year publication summary
|
6
|
10
|
13
|
7
|
9
|
6
|
7
|
10
|
3
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hirata Corporation | 358 |
9 |
| Ford Global Technologies, LLC | 19702 |
6 |
| NHK Spring Co., Ltd. | 1657 |
6 |
| Federal-Mogul Valvetrain GmbH | 60 |
4 |
| Honda Motor Co., Ltd. | 24537 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| Caterpillar Inc. | 8877 |
2 |
| Yamaha Motor Co., Ltd. | 2740 |
2 |
| Camcon Auto Limited | 18 |
2 |
| Elwema Automotive GmbH | 12 |
2 |
| Erwin Junker Grinding Technology A.S. | 27 |
2 |
| Fuji Oozx Inc. | 24 |
2 |
| MAHLE International GmbH | 2670 |
2 |
| Nittan Valve Co., Ltd. | 138 |
2 |
| O.M.T. Officina Meccanica Tartarini S.r.l. | 11 |
2 |
| Schaeffler KG | 960 |
2 |
| Volvo Lastvagnar AB | 922 |
2 |
| Cummins Power Generation Limited | 27 |
2 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
2 |
| Weifang Lichuang Electronic Technology Co., Ltd. | 8 |
2 |
| Other owners | 46 |