- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 15/03 - Check valves with guided rigid valve members with a hinged closure member
Patent holdings for IPC class F16K 15/03
Total number of patents in this class: 627
10-year publication summary
|
79
|
70
|
46
|
72
|
50
|
44
|
52
|
35
|
35
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamilton Sundstrand Corporation | 5016 |
44 |
| Mueller International, LLC | 744 |
16 |
| SPM Oil & Gas Inc. | 361 |
16 |
| Illinois Tool Works Inc. | 11858 |
14 |
| Watts Regulator Co. | 331 |
12 |
| Victaulic Company | 624 |
11 |
| FMC Technologies, Inc. | 615 |
9 |
| Tenneco Automotive Operating Company Inc. | 455 |
7 |
| Tyco Fire Products LP | 878 |
7 |
| Acorn Engineering Company, Inc | 13 |
7 |
| Tenneco Automotive Operating Company LLC | 200 |
7 |
| Flowtech Co., Ltd. | 18 |
6 |
| Futaba Industrial Co., Ltd. | 363 |
6 |
| Nifco Inc. | 1098 |
6 |
| Halliburton Energy Services, Inc. | 21320 |
5 |
| Weatherford Technology Holdings, LLC | 2154 |
5 |
| DeZURIK, Inc. | 57 |
5 |
| Hayward Industries, Inc. | 678 |
5 |
| Joe Santa & Associates Pty Limited | 15 |
5 |
| Oatey Co. | 220 |
5 |
| Other owners | 429 |