- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16K - Valves; taps; cocks; actuating-floats; devices 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: 729
10-year publication summary
|
53
|
48
|
64
|
67
|
73
|
73
|
84
|
74
|
78
|
21
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
16 |
| Kerr Machine Co. | 98 |
15 |
| Robert Bosch GmbH | 40953 |
13 |
| SPM Oil & Gas Inc. | 304 |
12 |
| Watts Regulator Co. | 284 |
10 |
| Burckhardt Compression AG | 116 |
9 |
| Toyota Motor Corporation | 28582 |
8 |
| Nitto Kohki Co., Ltd. | 280 |
8 |
| Ishizaki Co., Ltd. | 10 |
8 |
| Control Concepts, Inc. | 15 |
7 |
| Cameron International Corporation | 1305 |
6 |
| Hagepe International B.V. | 16 |
6 |
| Pacific Industrial Co., Ltd. | 226 |
6 |
| S.P.M. Flow Control, Inc. | 101 |
6 |
| Hamilton Sundstrand Corporation | 4525 |
5 |
| JTEKT Corporation | 2423 |
5 |
| Engineered Controls International, LLC | 122 |
5 |
| Flomatic Corporation | 44 |
5 |
| KYB Corporation | 1278 |
5 |
| Neoperl GmbH | 608 |
5 |
| Other owners | 569 |