- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01L - Cyclically operating valves for machines or engines
- F01L 1/34 - Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening
Patent holdings for IPC class F01L 1/34
Total number of patents in this class: 1839
10-year publication summary
|
192
|
175
|
193
|
105
|
78
|
55
|
45
|
13
|
7
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schaeffler Technologies AG & Co. KG | 8880 |
238 |
| Denso Corporation | 23338 |
138 |
| Hyundai Motor Company | 19021 |
130 |
| Ford Global Technologies, LLC | 19702 |
98 |
| Toyota Motor Corporation | 28582 |
94 |
| BorgWarner Inc. | 2604 |
86 |
| Aisin Seiki Kabushiki Kaisha | 2427 |
79 |
| GM Global Technology Operations LLC | 13620 |
58 |
| Delphi Technologies IP Limited | 1081 |
51 |
| Kia Motors Corporation | 7946 |
42 |
| Hitachi Astemo, Ltd. | 5618 |
42 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
36 |
| Schaeffler KG | 960 |
34 |
| Mitsubishi Jidosha Kogyo Kabushiki Kaisha | 1221 |
30 |
| Nissan Motor Co., Ltd. | 12249 |
28 |
| Eaton Intelligent Power Limited | 6113 |
28 |
| Daimler AG | 3462 |
27 |
| Jacobs Vehicle Systems, Inc. | 212 |
26 |
| Mazda Motor Corporation | 3087 |
25 |
| Nittan Valve Co., Ltd. | 138 |
23 |
| Other owners | 526 |