- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04F - Pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumpedsiphons
- F04F 9/04 - Diffusion pumps in combination with fore pumps, e.g. use of isolating valves
Patent holdings for IPC class F04F 9/04
Total number of patents in this class: 3
10-year publication summary
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1
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0
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0
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0
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0
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0
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0
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0
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0
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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
|
|---|---|---|
| Leybold GmbH | 295 |
2 |
| ASML Netherlands B.V. | 7695 |
1 |
| Other owners | 0 |