- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01L - Cyclically operating valves for machines or engines
- F01L 3/22 - Valve seats not provided for in preceding subgroups of this group; Fixing of valve seats
Patent holdings for IPC class F01L 3/22
Total number of patents in this class: 97
10-year publication summary
|
12
|
6
|
13
|
15
|
18
|
15
|
5
|
2
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 9158 |
26 |
| AVL List GmbH | 1258 |
6 |
| Cummins Inc. | 2470 |
6 |
| Jaguar Land Rover Limited | 4618 |
4 |
| Eaton Corporation | 1831 |
3 |
| Daimler AG | 3418 |
3 |
| Wartsila Finland Oy | 740 |
3 |
| Honda Motor Co., Ltd. | 24868 |
2 |
| Mazda Motor Corporation | 3071 |
2 |
| Bleistahl-Produktions GmbH & Co KG. | 19 |
2 |
| MAHLE International GmbH | 2691 |
2 |
| MAN Diesel & Turbo, Filial af MAN Diesel & Turbo SE, Tyskland | 39 |
2 |
| MAN Truck & Bus AG | 176 |
2 |
| Nippon Piston Ring Co., Ltd. | 133 |
2 |
| Cyclazoom LLC | 21 |
2 |
| Man Energy Solutions SE | 271 |
2 |
| Innio Jenbacher GmbH & Co og | 250 |
2 |
| GM Global Technology Operations LLC | 14229 |
1 |
| Ford Global Technologies, LLC | 20063 |
1 |
| Fiat Auto S.p.A. | 12 |
1 |
| Other owners | 23 |