- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 31/22 - Operating meansReleasing devices actuated by fluid actuated by a float actuating a lift valve with the float rigidly connected to the valve
Patent holdings for IPC class F16K 31/22
Total number of patents in this class: 136
10-year publication summary
|
22
|
22
|
19
|
21
|
10
|
12
|
10
|
6
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kyosan Denki Co., Ltd. | 52 |
7 |
| Nifco Inc. | 1099 |
6 |
| Piolax Inc. | 425 |
5 |
| Hamilton Sundstrand Corporation | 5015 |
4 |
| Graco Minnesota Inc. | 1280 |
4 |
| Mueller International, LLC | 744 |
4 |
| Toyoda Gosei Co., Ltd. | 1858 |
3 |
| Franklin Fueling Systems, LLC | 72 |
3 |
| FCA US LLC | 3562 |
2 |
| A.r.i. Flow Control Accessories Ltd. | 13 |
2 |
| BSH Bosch und Siemens Hausgerate GmbH | 2476 |
2 |
| Clay and Bailey Manufacturing Company | 6 |
2 |
| Hydrogarden Wholesale Supplies Limited | 4 |
2 |
| Lavelle Industries, Inc. | 89 |
2 |
| Mitsubishi Aircraft Corporation | 124 |
2 |
| Odour Technologies Pty Ltd | 4 |
2 |
| SCD Co., Ltd. | 25 |
2 |
| TLV Co., Ltd. | 339 |
2 |
| Vermeer Manufacturing Company | 671 |
2 |
| Acorn Engineering Company, Inc | 13 |
2 |
| Other owners | 76 |