- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 39/04 - Devices for relieving the pressure on the sealing faces for sliding valves
Patent holdings for IPC class F16K 39/04
Total number of patents in this class: 89
10-year publication summary
|
5
|
5
|
9
|
9
|
10
|
7
|
9
|
3
|
4
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mueller International, LLC | 723 |
9 |
| HYDAC Fluidtechnik GmbH | 138 |
4 |
| Robert Bosch GmbH | 42824 |
3 |
| Fisher Controls International LLC | 1508 |
3 |
| JTEKT Corporation | 2522 |
2 |
| ETO Magnetic GmbH | 280 |
2 |
| GE Oil & Gas Pressure Control LP | 75 |
2 |
| Valveworks USA, Inc. | 10 |
2 |
| Domin Fluid Power Limited | 17 |
2 |
| Danfoss A/S | 1353 |
2 |
| Vetco Gray, LLC | 149 |
2 |
| Solero Technologies, LLC | 31 |
2 |
| Illinois Tool Works Inc. | 11503 |
1 |
| Siemens AG | 24386 |
1 |
| The Boeing Company | 20124 |
1 |
| Pfizer Inc. | 3375 |
1 |
| Applied Materials Israel, Ltd. | 613 |
1 |
| Hamilton Sundstrand Corporation | 4916 |
1 |
| Aker Subsea AS | 129 |
1 |
| Bifold FluidPower Limited | 24 |
1 |
| Other owners | 46 |