- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F02B - Internal-combustion piston enginescombustion engines in general
- F02B 33/26 - Four-stroke engines characterised by having crankcase pumps
Patent holdings for IPC class F02B 33/26
Total number of patents in this class: 5
10-year publication summary
|
0
|
2
|
1
|
1
|
0
|
0
|
0
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Quest Engines, LLC | 31 |
2 |
| ANDREAS STIHL AG & Co. KG | 855 |
1 |
| Hitachi Koki Co., Ltd. | 394 |
1 |
| Nautilus Engineering, LLC | 7 |
1 |
| Other owners | 0 |