- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 9/08 - Piston-rings, seats therefor; Ring sealings of similar construction in general with expansion obtained by pressure of the medium
Patent holdings for IPC class F16J 9/08
Total number of patents in this class: 49
10-year publication summary
|
6
|
10
|
3
|
8
|
6
|
3
|
1
|
4
|
4
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mainspring Energy, Inc. | 98 |
6 |
| Robert Bosch GmbH | 40953 |
3 |
| Burckhardt Compression AG | 116 |
3 |
| Fisher Controls International LLC | 1520 |
3 |
| AI Alpine US Bidco LLC | 66 |
3 |
| AI Alpine US Bidco Inc. | 107 |
3 |
| Illinois Tool Works Inc. | 11152 |
2 |
| EtaGen, Inc. | 27 |
2 |
| Federal-Mogul Burscheid GmbH | 284 |
2 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 566 |
2 |
| LiquidPiston, Inc. | 41 |
2 |
| Beijing New Seal Institute of Hydraulic Technology | 3 |
2 |
| Hamilton Sundstrand Corporation | 4525 |
1 |
| NTN Corporation | 5008 |
1 |
| BorgWarner Inc. | 2604 |
1 |
| Bumach Engineering International B.V. | 28 |
1 |
| BWI Company Limited S.A. | 72 |
1 |
| Claudius Peters Technologies GmbH | 11 |
1 |
| Electro-Motive Diesel, Inc. | 74 |
1 |
| KS Kolbenschmidt GmbH | 164 |
1 |
| Other owners | 8 |