- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 31/50 - Mechanical actuating means with screw-spindle
Patent holdings for IPC class F16K 31/50
Total number of patents in this class: 580
10-year publication summary
|
68
|
46
|
57
|
55
|
45
|
41
|
40
|
47
|
30
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aktiebolaget SKF | 3062 |
19 |
| Fisher Controls International LLC | 1488 |
17 |
| Cameron International Corporation | 1365 |
16 |
| Mueller International, LLC | 733 |
14 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 638 |
13 |
| Fujikoki Corporation | 404 |
11 |
| Danfoss A/S | 1392 |
10 |
| Zhejiang Sanhua Intelligent Controls Co., Ltd. | 217 |
9 |
| AUMA Riester GmbH + Co. KG | 133 |
8 |
| Fujikin Incorporated | 695 |
8 |
| AVK Holding A/S | 97 |
8 |
| Zhejiang Sanhua Commercial Refrigeration Controls Co., Ltd. | 35 |
8 |
| Electrical Subsea & Drilling AS | 44 |
6 |
| Engineered Controls International, LLC | 151 |
6 |
| Guangdong Welling Motor Manufacturing Co., Ltd. | 223 |
6 |
| VAT Holding AG | 237 |
6 |
| CKD Corporation | 458 |
5 |
| GCE Holding AB | 36 |
5 |
| Grohe AG | 1051 |
5 |
| Parker Intangibles LLC | 1187 |
5 |
| Other owners | 395 |