- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
Patent holdings for IPC class F16K 31/122
Total number of patents in this class: 1470
10-year publication summary
|
137
|
150
|
148
|
169
|
130
|
114
|
99
|
88
|
72
|
55
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fujikin Incorporated | 692 |
72 |
| Fisher Controls International LLC | 1506 |
47 |
| Robert Bosch GmbH | 42815 |
22 |
| Halliburton Energy Services, Inc. | 20964 |
21 |
| VAT Holding AG | 227 |
21 |
| Hamilton Sundstrand Corporation | 4923 |
19 |
| GEA Tuchenhagen GmbH | 146 |
17 |
| Alfa Laval Corporate AB | 1321 |
16 |
| CKD Corporation | 455 |
16 |
| Swagelok Company | 318 |
15 |
| SMC Corporation | 1364 |
13 |
| Tescom Corporation | 122 |
13 |
| Cameron International Corporation | 1342 |
12 |
| KYB Corporation | 1382 |
12 |
| Festo AG & Co. KG | 306 |
10 |
| Festo SE & Co. KG | 389 |
10 |
| Emerson Process Management Regulator Technologies, Inc. | 383 |
9 |
| Baker Hughes Oilfield Operations, LLC | 2331 |
9 |
| Pratt & Whitney Canada Corp. | 4834 |
8 |
| Safoco, Inc. | 48 |
8 |
| Other owners | 1100 |