- 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: 5
10-year publication summary
0
|
2
|
1
|
0
|
1
|
0
|
0
|
0
|
0
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Federal-Mogul Corporation | 362 |
1 |
Herrmann Ultraschalltechnik GmbH & Co. KG | 147 |
1 |
Longyear TM, Inc. | 139 |
1 |
Innozeal Technology Ltd. | 2 |
1 |
Neo Mechanics Limited | 6 |
1 |
Other owners | 0 |