- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 9/06 - Piston-rings, seats thereforRing sealings of similar construction in general using separate springs expanding the ringsSprings therefor
Patent holdings for IPC class F16J 9/06
Total number of patents in this class: 214
10-year publication summary
|
23
|
18
|
20
|
20
|
14
|
13
|
16
|
6
|
7
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kabushiki Kaisha Riken | 301 |
34 |
| Federal-Mogul Burscheid GmbH | 279 |
32 |
| TPR Co., Ltd. | 169 |
25 |
| Nippon Piston Ring Co., Ltd. | 139 |
23 |
| Aquarius Engines (A.M.) Ltd. | 35 |
10 |
| MAHLE International GmbH | 2887 |
9 |
| Burckhardt Compression AG | 124 |
8 |
| Mainspring Energy, Inc. | 118 |
7 |
| MAHLE Metal Leve S/A | 155 |
5 |
| Federal-Mogul Corporation | 256 |
3 |
| Federal-Mogul Powertrain LLC | 274 |
3 |
| Hitachi Metals, Ltd. | 1917 |
2 |
| BAE Systems Bofors AB | 208 |
2 |
| Cummins Inc. | 2609 |
2 |
| Delaney Technologies Inc. | 12 |
2 |
| Montabert | 59 |
2 |
| SCHERDEL INNOTEC Forschungs-und Entwicklungs-GmbH | 35 |
2 |
| Mueller Refrigeration LLC | 9 |
2 |
| HPDI Technology Limited Partnership | 131 |
2 |
| Everllence SE | 189 |
2 |
| Other owners | 37 |