- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 9/26 - Piston-rings, seats thereforRing sealings of similar construction in general characterised by the use of particular materials
Patent holdings for IPC class F16J 9/26
Total number of patents in this class: 584
10-year publication summary
|
51
|
48
|
41
|
37
|
21
|
27
|
25
|
18
|
17
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Federal-Mogul Burscheid GmbH | 276 |
107 |
| Kabushiki Kaisha Riken | 297 |
92 |
| MAHLE International GmbH | 2921 |
76 |
| MAHLE Metal Leve S/A | 156 |
47 |
| Nippon Piston Ring Co., Ltd. | 138 |
43 |
| TPR Co., Ltd. | 172 |
27 |
| Federal-Mogul Powertrain LLC | 270 |
11 |
| Mainspring Energy, Inc. | 125 |
11 |
| Rtx Corporation | 10182 |
10 |
| Nippon Itf, Inc. | 40 |
7 |
| Honda Motor Co., Ltd. | 26309 |
6 |
| Nissan Motor Co., Ltd. | 13037 |
6 |
| Federal-Mogul Corporation | 236 |
6 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1557 |
4 |
| Tokusen Kogyo Co., Ltd. | 77 |
4 |
| Dover Pumps & Process Solutions Segment, Inc. | 24 |
4 |
| Hamilton Sundstrand Corporation | 5011 |
3 |
| NTN Corporation | 4925 |
3 |
| ASIMCO Shuanghuan Piston Ring (Yizheng) Co., Ltd. | 7 |
3 |
| Southwest Research Institute | 749 |
3 |
| Other owners | 111 |