- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; rotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 18/28 - Rotary-piston pumps specially adapted for elastic fluids of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions of other than internal-axis type
Patent holdings for IPC class F04C 18/28
Total number of patents in this class: 4
10-year publication summary
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1
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1
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0
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0
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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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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 69257 |
1 |
| Kobe Steel, Ltd. | 912 |
1 |
| International Electric Company Limited | 4 |
1 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
1 |
| Other owners | 0 |