- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01L - Cyclically operating valves for machines or engines
- F01L 3/20 - Shapes or constructions of valve members, not provided for in preceding subgroups of this group
Patent holdings for IPC class F01L 3/20
Total number of patents in this class: 189
10-year publication summary
|
23
|
22
|
17
|
15
|
11
|
22
|
18
|
13
|
8
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nittan Valve Co., Ltd. | 138 |
25 |
| Caterpillar Inc. | 8877 |
21 |
| Federal-Mogul Valvetrain GmbH | 60 |
10 |
| MAHLE International GmbH | 2670 |
10 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
7 |
| NITTAN Corporation | 50 |
6 |
| Fuji Oozx Inc. | 24 |
5 |
| Yoshimura Company | 10 |
5 |
| Honda Motor Co., Ltd. | 24537 |
4 |
| Jaguar Land Rover Limited | 4390 |
4 |
| Moto Tassinari, Inc. | 14 |
4 |
| Quest Engines, LLC | 31 |
4 |
| Marposs, S.p.A. | 141 |
3 |
| Cyclazoom LLC | 19 |
3 |
| Toyota Motor Corporation | 28582 |
2 |
| Eaton Corporation | 1839 |
2 |
| Ford Global Technologies, LLC | 19702 |
2 |
| BRP-Rotax GmbH & Co. KG | 149 |
2 |
| Erwin Junker Grinding Technology A.S. | 27 |
2 |
| Knob Engines s.r.o. | 8 |
2 |
| Other owners | 66 |