- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 15/02 - Check valves with guided rigid valve members
Patent holdings for IPC class F16K 15/02
Total number of patents in this class: 1069
10-year publication summary
|
119
|
143
|
132
|
124
|
112
|
97
|
84
|
77
|
55
|
34
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 42411 |
35 |
| Hamilton Sundstrand Corporation | 4826 |
13 |
| Halliburton Energy Services, Inc. | 20730 |
11 |
| BorgWarner Inc. | 2607 |
11 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 539 |
10 |
| Toyota Motor Corporation | 31377 |
9 |
| Schaeffler Technologies AG & Co. KG | 9731 |
9 |
| Engineered Controls International, LLC | 146 |
9 |
| Hanon Systems | 1885 |
9 |
| Reinz-Dichtungs-GmbH | 272 |
9 |
| SPM Oil & Gas Inc. | 321 |
9 |
| Denso Corporation | 24099 |
8 |
| JTEKT Corporation | 2482 |
8 |
| Goodrich Corporation | 2100 |
8 |
| Illinois Tool Works Inc. | 11392 |
7 |
| Burckhardt Compression AG | 120 |
7 |
| CareFusion 303, Inc. | 2168 |
7 |
| Mitsubishi Electric Corporation | 45752 |
6 |
| Dayco IP Holdings, LLC | 289 |
6 |
| Hayward Industries, Inc. | 672 |
6 |
| Other owners | 872 |