- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 9/00 - Piston-rings, seats therefor; Ring sealings of similar construction in general
Patent holdings for IPC class F16J 9/00
Total number of patents in this class: 166
10-year publication summary
|
22
|
20
|
10
|
13
|
5
|
6
|
10
|
4
|
8
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MAHLE International GmbH | 2670 |
17 |
| Federal-Mogul Burscheid GmbH | 284 |
9 |
| MAHLE Metal Leve S/A | 160 |
9 |
| Tenneco Inc | 274 |
5 |
| Bando Kiko Co., Ltd. | 73 |
4 |
| Kabushiki Kaisha Riken | 265 |
4 |
| TPR Co., Ltd. | 141 |
4 |
| Federal-Mogul Nurnberg GmbH | 137 |
3 |
| H.e.f. | 127 |
3 |
| Kalsi Engineering, Inc. | 50 |
3 |
| KS Kolbenschmidt GmbH | 164 |
3 |
| Wilmington Trust, National Association, AS Co-collateral Trustee, Successor Collateral Trustee | 345 |
3 |
| Baker Hughes Incorporated | 5689 |
2 |
| GM Global Technology Operations LLC | 13620 |
2 |
| Acd, LLC | 21 |
2 |
| A.W. Chesterton Company | 80 |
2 |
| Engineered Seal Products, Inc. | 11 |
2 |
| Kjellberg-stiftung | 59 |
2 |
| Materion Corporation | 293 |
2 |
| NOK Corporation | 2108 |
2 |
| Other owners | 83 |