- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/26 - Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
Patent holdings for IPC class F16J 15/26
Total number of patents in this class: 127
10-year publication summary
|
12
|
10
|
3
|
13
|
6
|
14
|
14
|
19
|
6
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Burckhardt Compression AG | 116 |
16 |
| NOK Corporation | 2108 |
8 |
| Kerr Machine Co. | 98 |
8 |
| Hoerbiger Wien GmbH | 123 |
7 |
| Halliburton Energy Services, Inc. | 20165 |
6 |
| Seal-ryt Corporation | 32 |
5 |
| Dover Pumps & Process Solutions Segment, Inc. | 14 |
5 |
| Howden Thomassen Compressors BV | 16 |
4 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
4 |
| Rtx Corporation | 8674 |
4 |
| STASSKOL GmbH | 11 |
3 |
| Bridgestone Corporation | 7067 |
2 |
| Rolls-Royce PLC | 2944 |
2 |
| Garlock Sealing Technologies LLC | 149 |
2 |
| Hermetik Hydraulik AB | 9 |
2 |
| MAN Diesel & Turbo, Filial af MAN Diesel & Turbo SE, Tyskland | 40 |
2 |
| National Coupling Company, Inc. | 61 |
2 |
| Oil Lift Technology Inc. | 19 |
2 |
| Rolls-Royce Corporation | 1686 |
2 |
| Technetics Group LLC | 39 |
2 |
| Other owners | 39 |