- 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
|
7
|
12
|
6
|
13
|
15
|
18
|
15
|
5
|
2
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 8877 |
26 |
| AVL List GmbH | 1232 |
6 |
| Cummins Inc. | 2369 |
5 |
| Jaguar Land Rover Limited | 4390 |
4 |
| Eaton Corporation | 1839 |
3 |
| Daimler AG | 3462 |
3 |
| Wartsila Finland Oy | 740 |
3 |
| Honda Motor Co., Ltd. | 24537 |
2 |
| Mazda Motor Corporation | 3087 |
2 |
| Bleistahl-Produktions GmbH & Co KG. | 22 |
2 |
| Knob Engines s.r.o. | 8 |
2 |
| MAHLE International GmbH | 2670 |
2 |
| MAN Diesel & Turbo, Filial af MAN Diesel & Turbo SE, Tyskland | 40 |
2 |
| MAN Truck & Bus AG | 180 |
2 |
| Nippon Piston Ring Co., Ltd. | 131 |
2 |
| Cyclazoom LLC | 19 |
2 |
| Man Energy Solutions SE | 274 |
2 |
| GM Global Technology Operations LLC | 13620 |
1 |
| Ford Global Technologies, LLC | 19702 |
1 |
| Fiat Auto S.p.A. | 17 |
1 |
| Other owners | 24 |