- 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: 344
10-year publication summary
|
28
|
27
|
31
|
34
|
38
|
24
|
33
|
12
|
30
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fisher Controls International LLC | 1506 |
24 |
| Cameron International Corporation | 1339 |
19 |
| Schaeffler Technologies AG & Co. KG | 9967 |
12 |
| Denso Corporation | 24404 |
11 |
| Oil States Energy Services, L.L.C. | 76 |
9 |
| Halliburton Energy Services, Inc. | 20937 |
7 |
| MoGas Industries, Inc. | 42 |
7 |
| Zibo Votaisi Petrochemical Equipment Co., Ltd | 12 |
7 |
| KITZ Corporation | 208 |
6 |
| Shanghai HONGYAN Returnable Transit Packagings Co., Ltd. | 152 |
5 |
| Velan Inc. | 42 |
5 |
| Cameron Technologies Limited | 214 |
5 |
| Flowserve Pte. Ltd | 356 |
5 |
| Illinois Tool Works Inc. | 11492 |
4 |
| Cortec, L.L.C. | 23 |
4 |
| Hayward Industries, Inc. | 667 |
4 |
| Vernet | 154 |
4 |
| Worldwide Oilfield Machine, Inc. | 51 |
4 |
| Gasket International S.r.l. | 5 |
4 |
| SCV Valve, LLC | 10 |
4 |
| Other owners | 194 |