- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- 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: 641
10-year publication summary
|
57
|
51
|
50
|
59
|
67
|
56
|
57
|
40
|
37
|
9
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
103 |
| Eagle Industry Co., Ltd. | 1062 |
18 |
| NTN Corporation | 5008 |
16 |
| Kabushiki Kaisha Riken | 265 |
16 |
| Fisher Controls International LLC | 1520 |
15 |
| Seal-ryt Corporation | 32 |
15 |
| Hitachi Automotive Systems, Ltd. | 3970 |
12 |
| Halliburton Energy Services, Inc. | 20165 |
10 |
| Saint-Gobain Performance Plastics Corporation | 1028 |
10 |
| Nifco Inc. | 1103 |
9 |
| SPM Oil & Gas Inc. | 304 |
9 |
| Denso Corporation | 23338 |
8 |
| Viking Pump, Inc. | 61 |
8 |
| A.W. Chesterton Company | 80 |
7 |
| Inpro/Seal LLC | 69 |
7 |
| Kayaba Industry Co., Ltd. | 376 |
6 |
| KYB Corporation | 1278 |
6 |
| SMC Corporation | 1354 |
6 |
| GD Energy Products, LLC | 78 |
6 |
| Mitsubishi Cable Industries, Ltd. | 175 |
5 |
| Other owners | 349 |