- 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: 1097
10-year publication summary
|
114
|
138
|
127
|
118
|
106
|
96
|
82
|
74
|
54
|
60
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 42861 |
36 |
| Hamilton Sundstrand Corporation | 4932 |
13 |
| Halliburton Energy Services, Inc. | 20991 |
11 |
| BorgWarner Inc. | 2608 |
11 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 578 |
11 |
| SPM Oil & Gas Inc. | 332 |
11 |
| Toyota Motor Corporation | 33077 |
9 |
| Schaeffler Technologies AG & Co. KG | 10056 |
9 |
| Engineered Controls International, LLC | 150 |
9 |
| Hanon Systems | 1992 |
9 |
| Reinz-Dichtungs-GmbH | 280 |
9 |
| Denso Corporation | 24588 |
8 |
| JTEKT Corporation | 2519 |
8 |
| Goodrich Corporation | 2148 |
8 |
| Illinois Tool Works Inc. | 11523 |
7 |
| LG Electronics Inc. | 73714 |
7 |
| Burckhardt Compression AG | 123 |
7 |
| CareFusion 303, Inc. | 2220 |
7 |
| Mitsubishi Electric Corporation | 46618 |
6 |
| Dayco IP Holdings, LLC | 279 |
6 |
| Other owners | 895 |