- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 15/06 - Check valves with guided rigid valve members with guided stems
Patent holdings for IPC class F16K 15/06
Total number of patents in this class: 804
10-year publication summary
|
46
|
62
|
63
|
69
|
69
|
74
|
75
|
77
|
66
|
52
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21015 |
17 |
| Kerr Machine Co. | 157 |
15 |
| SPM Oil & Gas Inc. | 334 |
15 |
| Robert Bosch GmbH | 43001 |
14 |
| Watts Regulator Co. | 312 |
13 |
| Burckhardt Compression AG | 123 |
9 |
| Toyota Motor Corporation | 33341 |
8 |
| Neoperl GmbH | 597 |
8 |
| Nitto Kohki Co., Ltd. | 260 |
8 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 590 |
8 |
| Ishizaki Co., Ltd. | 10 |
8 |
| Engineered Controls International, LLC | 150 |
7 |
| Proserv Gilmore Valve LLC | 29 |
7 |
| Cameron International Corporation | 1351 |
6 |
| Control Concepts, Inc. | 15 |
6 |
| Pacific Industrial Co., Ltd. | 261 |
6 |
| S.P.M. Flow Control, Inc. | 99 |
6 |
| Hamilton Sundstrand Corporation | 4954 |
5 |
| Schaeffler Technologies AG & Co. KG | 10310 |
5 |
| JTEKT Corporation | 2521 |
5 |
| Other owners | 628 |