- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/18 - Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
Patent holdings for IPC class F16J 15/18
Total number of patents in this class: 706
10-year publication summary
|
47
|
44
|
55
|
59
|
51
|
54
|
40
|
37
|
43
|
43
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2238 |
106 |
| Eagle Industry Co., Ltd. | 1149 |
25 |
| NTN Corporation | 4964 |
18 |
| Fisher Controls International LLC | 1504 |
16 |
| Kabushiki Kaisha Riken | 293 |
16 |
| Seal-ryt Corporation | 35 |
16 |
| A.W. Chesterton Company | 92 |
13 |
| Hitachi Automotive Systems, Ltd. | 3955 |
12 |
| Halliburton Energy Services, Inc. | 21090 |
10 |
| Saint-Gobain Performance Plastics Corporation | 1035 |
10 |
| Viking Pump, Inc. | 68 |
10 |
| SPM Oil & Gas Inc. | 339 |
10 |
| Nifco Inc. | 1110 |
9 |
| Inpro/Seal LLC | 97 |
9 |
| Denso Corporation | 24797 |
8 |
| GD Energy Products, LLC | 120 |
8 |
| KYB Corporation | 1394 |
6 |
| SMC Corporation | 1376 |
6 |
| Vulcan Industrial Holdings LLC | 64 |
6 |
| Caterpillar Inc. | 9852 |
5 |
| Other owners | 387 |