- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
Patent holdings for IPC class F16K 31/04
Total number of patents in this class: 2588
10-year publication summary
|
218
|
237
|
230
|
223
|
175
|
208
|
224
|
220
|
206
|
116
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fujikoki Corporation | 415 |
152 |
| Denso Corporation | 25534 |
92 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 703 |
34 |
| Kohler Mira Limited | 311 |
33 |
| Aisan Kogyo Kabushiki Kaisha | 768 |
31 |
| Zhejiang Sanhua Automotive Components Co., Ltd. | 331 |
30 |
| AUMA Riester GmbH + Co. KG | 137 |
27 |
| Danfoss A/S | 1432 |
27 |
| Pierburg GmbH | 480 |
26 |
| Nidec Sankyo Corporation | 1054 |
24 |
| Cameron International Corporation | 1370 |
23 |
| Illinois Tool Works Inc. | 11863 |
22 |
| Belimo Holding AG | 290 |
22 |
| Chandler Systems, Inc. | 41 |
22 |
| Hamilton Sundstrand Corporation | 5015 |
21 |
| LG Electronics Inc. | 75694 |
20 |
| ECO Holding 1 GmbH | 129 |
20 |
| MAHLE International GmbH | 2911 |
19 |
| VAT Holding AG | 246 |
19 |
| Vitesco Technologies GmbH | 2397 |
19 |
| Other owners | 1905 |