- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16K - Valves; taps; cocks; actuating-floats; devices 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: 550
10-year publication summary
|
68
|
70
|
49
|
60
|
57
|
50
|
43
|
38
|
46
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aktiebolaget SKF | 2839 |
19 |
| Fisher Controls International LLC | 1515 |
18 |
| Cameron International Corporation | 1323 |
16 |
| Mueller International, LLC | 707 |
13 |
| Fujikoki Corporation | 364 |
9 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 491 |
9 |
| Zhejiang Sanhua Intelligent Controls Co., Ltd. | 199 |
9 |
| AVK Holding A/S | 95 |
9 |
| Fujikin Incorporated | 690 |
8 |
| Danfoss A/S | 1320 |
8 |
| Zhejiang Sanhua Commercial Refrigeration Controls Co., Ltd. | 32 |
8 |
| AUMA Riester GmbH + Co. KG | 101 |
7 |
| CKD Corporation | 443 |
6 |
| Electrical Subsea & Drilling AS | 42 |
6 |
| Engineered Controls International, LLC | 140 |
6 |
| Guangdong Welling Motor Manufacturing Co., Ltd. | 193 |
6 |
| VAT Holding AG | 210 |
6 |
| GCE Holding AB | 33 |
5 |
| Tapcoenpro, LLC | 24 |
5 |
| Becton, Dickinson and Company | 7071 |
4 |
| Other owners | 373 |