- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 41/04 - Spindle sealings with stuffing-box with at least one ring of rubber or like material between spindle and housing
Patent holdings for IPC class F16K 41/04
Total number of patents in this class: 206
10-year publication summary
|
8
|
19
|
15
|
7
|
17
|
15
|
18
|
23
|
21
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fisher Controls International LLC | 1421 |
14 |
| Dresser LLC | 301 |
8 |
| GlobalForce IP Limited | 42 |
5 |
| Asco SAS | 16 |
5 |
| Robert Bosch GmbH | 44398 |
4 |
| Aegis Flow Technologies, L.L.C. | 23 |
4 |
| A.W. Chesterton Company | 94 |
4 |
| Engineered Controls International, LLC | 161 |
4 |
| Danfoss A/S | 1448 |
4 |
| Denso Corporation | 25820 |
3 |
| GE Oil & Gas Pressure Control LP | 71 |
3 |
| KITZ Corporation | 211 |
3 |
| Parker Hannifin Manufacturing Limited | 50 |
3 |
| Zhejiang Sanhua Automotive Components Co., Ltd. | 339 |
3 |
| A&N Corporation | 7 |
3 |
| Flowserve Pte. Ltd | 388 |
3 |
| Baker Hughes Pressure Control LP | 10 |
3 |
| Mitsubishi Electric Corporation | 48460 |
2 |
| Caterpillar Inc. | 10343 |
2 |
| Aisin Seiki Kabushiki Kaisha | 2147 |
2 |
| Other owners | 124 |