- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- 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: 53
10-year publication summary
|
3
|
8
|
0
|
2
|
4
|
9
|
7
|
1
|
1
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
10 |
| Eagle Industry Co., Ltd. | 1062 |
6 |
| Seal-ryt Corporation | 32 |
5 |
| Baker Hughes Incorporated | 5689 |
4 |
| Pratt & Whitney Canada Corp. | 4215 |
4 |
| Rolls-Royce PLC | 2944 |
2 |
| BorgWarner Inc. | 2604 |
2 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| The Regents of the University of Michigan | 4409 |
1 |
| A.W. Chesterton Company | 80 |
1 |
| Burckhardt Compression AG | 116 |
1 |
| Cummins Intellectual Properties, Inc. | 50 |
1 |
| Fisher Controls International LLC | 1520 |
1 |
| GM Global Technology Operations, Inc. | 641 |
1 |
| Ishikawa Gasket Co., Ltd. | 26 |
1 |
| Microflex Technologies LLC | 4 |
1 |
| Mikuni Corporation | 332 |
1 |
| Nippon Pillar Packing Co., Ltd. | 269 |
1 |
| Parker Intangibles LLC | 1237 |
1 |
| Safran Aircraft Engines | 5739 |
1 |
| Other owners | 7 |