- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 31/18 - Operating meansReleasing devices actuated by fluid actuated by a float
Patent holdings for IPC class F16K 31/18
Total number of patents in this class: 256
10-year publication summary
|
20
|
20
|
21
|
22
|
20
|
15
|
5
|
13
|
8
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TLV Co., Ltd. | 339 |
13 |
| Fluidmaster, Inc. | 144 |
12 |
| Danco, Inc. | 192 |
8 |
| Eaton Intelligent Power Limited | 6243 |
6 |
| Lab (Xiamen) Sanitary Fittings Inc | 38 |
5 |
| Piolax Inc. | 425 |
5 |
| Walnab Pty Limited | 17 |
5 |
| Weir Minerals Australia, Ltd. | 310 |
5 |
| Halliburton Energy Services, Inc. | 21338 |
4 |
| Franklin Fueling Systems, LLC | 72 |
4 |
| Kohler Co. | 4147 |
3 |
| DeZURIK, Inc. | 57 |
3 |
| Flomax International, Inc. | 21 |
3 |
| Flowtech Fueling, LLC | 6 |
3 |
| Graco Minnesota Inc. | 1280 |
3 |
| Kyosan Denki Co., Ltd. | 52 |
3 |
| Mueller International, LLC | 744 |
3 |
| Nifco Inc. | 1099 |
3 |
| Dubai Electricity & Water Authority | 11 |
3 |
| Championx LLC | 633 |
3 |
| Other owners | 159 |