- 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: 90
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 | 716 |
9 |
| HYDAC Fluidtechnik GmbH | 135 |
4 |
| Robert Bosch GmbH | 42596 |
3 |
| Fisher Controls International LLC | 1485 |
3 |
| JTEKT Corporation | 2492 |
2 |
| ETO Magnetic GmbH | 274 |
2 |
| GE Oil & Gas Pressure Control LP | 75 |
2 |
| Valveworks USA, Inc. | 9 |
2 |
| Domin Fluid Power Limited | 16 |
2 |
| Danfoss A/S | 1352 |
2 |
| Vetco Gray, LLC | 153 |
2 |
| Solero Technologies, LLC | 29 |
2 |
| Illinois Tool Works Inc. | 11437 |
1 |
| Siemens AG | 24552 |
1 |
| The Boeing Company | 20031 |
1 |
| Pfizer Inc. | 3371 |
1 |
| Applied Materials Israel, Ltd. | 606 |
1 |
| Hamilton Sundstrand Corporation | 4836 |
1 |
| Aker Subsea AS | 130 |
1 |
| Bifold FluidPower Limited | 24 |
1 |
| Other owners | 47 |