- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 5/20 - Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
Patent holdings for IPC class F16K 5/20
Total number of patents in this class: 354
10-year publication summary
|
31
|
35
|
40
|
39
|
29
|
35
|
12
|
37
|
8
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fisher Controls International LLC | 1457 |
24 |
| Cameron International Corporation | 1370 |
19 |
| Schaeffler Technologies AG & Co. KG | 10968 |
12 |
| Denso Corporation | 25534 |
11 |
| Oil States Energy Services, L.L.C. | 74 |
8 |
| Halliburton Energy Services, Inc. | 21338 |
7 |
| KITZ Corporation | 209 |
7 |
| Zibo Votaisi Petrochemical Equipment Co., Ltd | 12 |
7 |
| Velan Inc. | 45 |
6 |
| Illinois Tool Works Inc. | 11863 |
5 |
| MoGas Industries, Inc. | 23 |
5 |
| Shanghai HONGYAN Returnable Transit Packagings Co., Ltd. | 150 |
5 |
| Cameron Technologies Limited | 230 |
5 |
| Flowserve Pte. Ltd | 380 |
5 |
| SCV Valve, LLC | 14 |
5 |
| Bray International, Inc. | 149 |
4 |
| Cortec, L.L.C. | 29 |
4 |
| Hayward Industries, Inc. | 678 |
4 |
| Vernet | 157 |
4 |
| Worldwide Oilfield Machine, Inc. | 54 |
4 |
| Other owners | 203 |