- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 9/04 - Helical rings
Patent holdings for IPC class F16J 9/04
Total number of patents in this class: 6
10-year publication summary
|
2
|
1
|
0
|
1
|
0
|
0
|
0
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Federal-Mogul Corporation | 335 |
1 |
| Goodrich Corporation | 2089 |
1 |
| Herrmann Ultraschalltechnik GmbH & Co. KG | 162 |
1 |
| Longyear TM, Inc. | 128 |
1 |
| Innozeal Technology Ltd. | 2 |
1 |
| Neo Mechanics Limited | 6 |
1 |
| Other owners | 0 |