- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 31/44 - Mechanical actuating means
Patent holdings for IPC class F16K 31/44
Total number of patents in this class: 597
10-year publication summary
|
46
|
50
|
54
|
48
|
36
|
29
|
28
|
26
|
25
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fisher Controls International LLC | 1460 |
13 |
| Fujikin Incorporated | 695 |
10 |
| Mitsubishi Heavy Industries Compressor Corporation | 640 |
8 |
| Denso Corporation | 25513 |
7 |
| Kohler Co. | 4136 |
6 |
| Lintec of America, Inc. | 159 |
6 |
| MAHLE International GmbH | 2911 |
6 |
| Neoperl GmbH | 621 |
6 |
| Halliburton Energy Services, Inc. | 21320 |
5 |
| Emerson Process Management Regulator Technologies, Inc. | 389 |
5 |
| Xiamen Solex High-Tech Industries Co., Ltd. | 434 |
5 |
| Samsung Electronics Co., Ltd. | 157557 |
4 |
| Mitsubishi Electric Corporation | 47971 |
4 |
| Hyundai Motor Company | 24602 |
4 |
| Goodrich Corporation | 2183 |
4 |
| Graco Minnesota Inc. | 1277 |
4 |
| Griswold Controls, LLC | 27 |
4 |
| LIXIL Corporation | 769 |
4 |
| Mechano Transformer Corporation | 44 |
4 |
| Neoperl AG | 157 |
4 |
| Other owners | 484 |