- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01B - Machines or engines, in general or of positive-displacement type, e.g. steam engines
- F01B 31/28 - Cylinders or cylinder covers
Patent holdings for IPC class F01B 31/28
Total number of patents in this class: 14
10-year publication summary
|
4
|
4
|
0
|
1
|
2
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0
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0
|
1
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0
|
0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bell Helicopter Textron Inc. | 956 |
3 |
| Hyundai Motor Company | 25119 |
1 |
| Komatsu Ltd. | 4827 |
1 |
| CNH Industrial Canada, Ltd. | 958 |
1 |
| Goodrich Corporation | 2182 |
1 |
| PHD, Inc. | 64 |
1 |
| Technische Universität Dresden | 549 |
1 |
| Thermal Power Recovery LLC | 11 |
1 |
| Voith Patent GmbH | 2742 |
1 |
| Nuovo Pignone Tecnologie S.r.l. | 1232 |
1 |
| Yuanjun Guo | 3 |
1 |
| ZF CV Systems Europe BV | 825 |
1 |
| Other owners | 0 |