- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 31/28 - Operating meansReleasing devices actuated by fluid actuated by a float actuating a lift valve with two or more floats actuating one valve
Patent holdings for IPC class F16K 31/28
Total number of patents in this class: 14
10-year publication summary
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0
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4
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2
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2
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4
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1
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2
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1
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1
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hydrogarden Wholesale Supplies Limited | 4 |
2 |
| Kyosan Denki Co., Ltd. | 52 |
2 |
| Lab (Xiamen) Sanitary Fittings Inc | 38 |
2 |
| Kohler Co. | 4066 |
1 |
| Clay and Bailey Manufacturing Company | 5 |
1 |
| Kansei Company | 6 |
1 |
| Nippon Koei Co., Ltd. | 17 |
1 |
| Tokyo Metropolitan Sewerage Service Corporation | 19 |
1 |
| Korea Machinery Ind. Inc. | 2 |
1 |
| Shanghai ZTEC Environmental S&T CO., LTD. | 5 |
1 |
| Jiangsu FORYOU Environmental Technology Co., Ltd. | 5 |
1 |
| Other owners | 0 |