- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F02B - Internal-combustion piston enginescombustion engines in general
- F02B 57/04 - Control of cylinder-charge admission or exhaust
Patent holdings for IPC class F02B 57/04
Total number of patents in this class: 9
10-year publication summary
|
3
|
1
|
0
|
0
|
3
|
3
|
1
|
1
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 5506 |
4 |
| Arctic Cat Inc. | 472 |
1 |
| Duke Engines Limited | 6 |
1 |
| Micro Turbine Technology B.V. | 20 |
1 |
| WB Development Company, LLC | 19 |
1 |
| Progress Rail Locomotive Inc. | 338 |
1 |
| Other owners | 0 |