- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 1/46 - Attachment of sealing rings
Patent holdings for IPC class F16K 1/46
Total number of patents in this class: 477
10-year publication summary
|
34
|
44
|
57
|
35
|
52
|
56
|
47
|
42
|
41
|
24
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Emerson Process Management Regulator Technologies, Inc. | 391 |
21 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 703 |
20 |
| Fisher Controls International LLC | 1457 |
16 |
| SPM Oil & Gas Inc. | 360 |
13 |
| Swagelok Company | 316 |
10 |
| Dresser LLC | 294 |
8 |
| Continental Automotive GmbH | 4503 |
7 |
| Weir Minerals Netherlands B.V. | 63 |
6 |
| Vulcan Industrial Holdings LLC | 81 |
6 |
| Flowserve Pte. Ltd | 380 |
6 |
| Vitesco Technologies GmbH | 2397 |
6 |
| Robert Bosch GmbH | 44160 |
5 |
| CKD Corporation | 468 |
5 |
| Hanon Systems | 2106 |
5 |
| Mac Valves, Inc. | 79 |
5 |
| Kerr Machine Co. | 175 |
5 |
| Baker Hughes Oilfield Operations, LLC | 2527 |
5 |
| Zhejiang Sanhua Commercial Refrigeration Controls Co., Ltd. | 36 |
5 |
| Eugen Seitz AG | 35 |
4 |
| Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. | 45 |
4 |
| Other owners | 315 |