- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 1/52 - Means for additional adjustment of the rate of flow
Patent holdings for IPC class F16K 1/52
Total number of patents in this class: 356
10-year publication summary
|
32
|
20
|
31
|
33
|
37
|
28
|
28
|
31
|
22
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fisher Controls International LLC | 1452 |
23 |
| Emerson Process Management Regulator Technologies, Inc. | 391 |
10 |
| Robert Bosch GmbH | 44238 |
9 |
| Fujikin Incorporated | 700 |
9 |
| Flühs Drehtechnik GmbH | 73 |
8 |
| Danfoss A/S | 1444 |
7 |
| Bray International, Inc. | 151 |
6 |
| Cameron International Corporation | 1365 |
6 |
| Giacomini S.p.A. | 74 |
6 |
| Pierburg GmbH | 478 |
6 |
| Neoperl GmbH | 627 |
5 |
| Samson Aktiengesellschaft | 277 |
5 |
| Automatic Switch Company | 81 |
4 |
| Cortec, L.L.C. | 29 |
4 |
| Fujikoki Corporation | 418 |
4 |
| Nordson Corporation | 1206 |
4 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 714 |
4 |
| Zhejiang Sanhua Intelligent Controls Co., Ltd. | 229 |
4 |
| Dresser LLC | 299 |
4 |
| The E3 Company LLC | 17 |
4 |
| Other owners | 224 |