- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16K - Valves; taps; cocks; actuating-floats; devices 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: 174
10-year publication summary
|
10
|
8
|
19
|
15
|
7
|
17
|
15
|
18
|
20
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fisher Controls International LLC | 1515 |
12 |
| Dresser LLC | 250 |
5 |
| Robert Bosch GmbH | 41765 |
4 |
| Aegis Flow Technologies, L.L.C. | 23 |
4 |
| Engineered Controls International, LLC | 139 |
4 |
| GE Oil & Gas Pressure Control LP | 75 |
4 |
| KITZ Corporation | 203 |
4 |
| Asco SAS | 15 |
4 |
| Denso Corporation | 23747 |
3 |
| Parker Hannifin Manufacturing Limited | 51 |
3 |
| Zhejiang Sanhua Automotive Components Co., Ltd. | 278 |
3 |
| A&N Corporation | 7 |
3 |
| Flowserve Pte. Ltd | 369 |
3 |
| Baker Hughes Pressure Control LP | 34 |
3 |
| Mitsubishi Electric Corporation | 44794 |
2 |
| Caterpillar Inc. | 9158 |
2 |
| Aisin Seiki Kabushiki Kaisha | 2285 |
2 |
| Hamilton Sundstrand Corporation | 4724 |
2 |
| Aisan Kogyo Kabushiki Kaisha | 722 |
2 |
| Aker Solutions AS | 234 |
2 |
| Other owners | 103 |