- 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: 593
10-year publication summary
|
70
|
49
|
60
|
57
|
50
|
44
|
40
|
50
|
33
|
24
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aktiebolaget SKF | 3134 |
19 |
| Fisher Controls International LLC | 1453 |
17 |
| Cameron International Corporation | 1370 |
16 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 710 |
15 |
| Mueller International, LLC | 746 |
14 |
| Fujikoki Corporation | 416 |
12 |
| AUMA Riester GmbH + Co. KG | 140 |
10 |
| Danfoss A/S | 1438 |
10 |
| Zhejiang Sanhua Intelligent Controls Co., Ltd. | 229 |
9 |
| AVK Holding A/S | 97 |
9 |
| Fujikin Incorporated | 699 |
8 |
| Zhejiang Sanhua Commercial Refrigeration Controls Co., Ltd. | 36 |
8 |
| Engineered Controls International, LLC | 160 |
7 |
| Electrical Subsea & Drilling AS | 44 |
6 |
| Guangdong Welling Motor Manufacturing Co., Ltd. | 231 |
6 |
| VAT Holding AG | 247 |
6 |
| CKD Corporation | 468 |
5 |
| GCE Holding AB | 34 |
5 |
| Grohe AG | 1051 |
5 |
| Parker Intangibles LLC | 1170 |
5 |
| Other owners | 401 |