- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 17/20 - Excess-flow valves
Patent holdings for IPC class F16K 17/20
Total number of patents in this class: 121
10-year publication summary
|
14
|
8
|
12
|
15
|
9
|
9
|
8
|
6
|
4
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BrassCraft Manufacturing Company | 74 |
6 |
| Dresser LLC | 269 |
5 |
| Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. | 44 |
4 |
| Solar Water Solutions Oy | 11 |
3 |
| Rtx Corporation | 9395 |
3 |
| Hamilton Sundstrand Corporation | 4888 |
2 |
| China University of Mining and Technology | 1256 |
2 |
| Emerson Process Management Regulator Technologies, Inc. | 383 |
2 |
| Fisher Controls International LLC | 1476 |
2 |
| Lorax Systems, Inc. | 8 |
2 |
| National Oilwell Varco, L.P. | 1669 |
2 |
| Sparkling Drink Systems - Innovation Center S.r.l. | 2 |
2 |
| Woongjin Coway Co., Ltd. | 138 |
2 |
| Zhejiang Sanhua Co., Ltd. | 40 |
2 |
| Sparkling Drink Systems Innovation Center Limited | 3 |
2 |
| Shanghai Fiorentini Gas Equipment Co., Ltd | 17 |
2 |
| Shanghai Institute of Space Propulsion | 9 |
2 |
| Illinois Tool Works Inc. | 11468 |
1 |
| Honda Motor Co., Ltd. | 25301 |
1 |
| Pratt & Whitney Canada Corp. | 4765 |
1 |
| Other owners | 73 |