- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/30 - Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of carbon
Patent holdings for IPC class F16J 15/30
Total number of patents in this class: 55
10-year publication summary
|
8
|
0
|
2
|
4
|
9
|
7
|
1
|
1
|
2
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9288 |
10 |
| Eagle Industry Co., Ltd. | 1125 |
6 |
| Seal-ryt Corporation | 34 |
5 |
| Baker Hughes Incorporated | 5299 |
4 |
| Pratt & Whitney Canada Corp. | 4518 |
4 |
| Rolls-Royce PLC | 3027 |
2 |
| BorgWarner Inc. | 2608 |
2 |
| EGC Operating Company LLC dba EGC Enterprises, Inc. | 3 |
2 |
| Mitsubishi Electric Corporation | 45693 |
1 |
| The Regents of the University of Michigan | 4660 |
1 |
| A.W. Chesterton Company | 90 |
1 |
| Burckhardt Compression AG | 120 |
1 |
| Cummins Intellectual Properties, Inc. | 50 |
1 |
| EagleBurgmann Germany GmbH & Co. KG | 336 |
1 |
| Fisher Controls International LLC | 1477 |
1 |
| GM Global Technology Operations, Inc. | 595 |
1 |
| Ishikawa Gasket Co., Ltd. | 27 |
1 |
| Microflex Technologies LLC | 4 |
1 |
| Mikuni Corporation | 343 |
1 |
| Nippon Pillar Packing Co., Ltd. | 255 |
1 |
| Other owners | 8 |