- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16K - Valves; taps; cocks; actuating-floats; devices 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: 592
10-year publication summary
|
26
|
66
|
79
|
70
|
46
|
71
|
48
|
44
|
47
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamilton Sundstrand Corporation | 4525 |
43 |
| Illinois Tool Works Inc. | 11152 |
15 |
| Mueller International, LLC | 694 |
15 |
| SPM Oil & Gas Inc. | 304 |
13 |
| Watts Regulator Co. | 284 |
12 |
| Victaulic Company | 664 |
11 |
| Coscarella, Gabe | 52 |
9 |
| FMC Technologies, Inc. | 603 |
9 |
| Weatherford Technology Holdings, LLC | 2135 |
8 |
| Flowtech Co., Ltd. | 19 |
7 |
| Halliburton Energy Services, Inc. | 20165 |
6 |
| Futaba Industrial Co., Ltd. | 296 |
6 |
| Nifco Inc. | 1103 |
6 |
| Oatey Co. | 217 |
6 |
| Tyco Fire Products LP | 831 |
6 |
| Baker Hughes Incorporated | 5689 |
5 |
| Joe Santa & Associates Pty Limited | 15 |
5 |
| Tenneco Automotive Operating Company Inc. | 658 |
5 |
| Valve Innovations, LLC | 29 |
5 |
| Acorn Engineering Company, Inc | 9 |
5 |
| Other owners | 395 |