- 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: 1148
10-year publication summary
|
143
|
132
|
124
|
112
|
97
|
84
|
79
|
62
|
77
|
43
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 44160 |
35 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 703 |
14 |
| SPM Oil & Gas Inc. | 360 |
14 |
| Halliburton Energy Services, Inc. | 21338 |
13 |
| Hamilton Sundstrand Corporation | 5015 |
13 |
| BorgWarner Inc. | 2583 |
11 |
| Toyota Motor Corporation | 35772 |
9 |
| Schaeffler Technologies AG & Co. KG | 10968 |
9 |
| Engineered Controls International, LLC | 160 |
9 |
| Hanon Systems | 2106 |
9 |
| Hayward Industries, Inc. | 678 |
9 |
| Reinz-Dichtungs-GmbH | 282 |
9 |
| LG Electronics Inc. | 75694 |
8 |
| Denso Corporation | 25534 |
8 |
| JTEKT Corporation | 2583 |
8 |
| CareFusion 303, Inc. | 2379 |
8 |
| Goodrich Corporation | 2182 |
8 |
| Swagelok Company | 316 |
8 |
| Illinois Tool Works Inc. | 11863 |
7 |
| Burckhardt Compression AG | 124 |
7 |
| Other owners | 932 |