- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/12 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
Patent holdings for IPC class F16J 15/12
Total number of patents in this class: 579
10-year publication summary
|
69
|
45
|
47
|
51
|
33
|
47
|
23
|
21
|
30
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2166 |
82 |
| Oiles Corporation | 507 |
34 |
| The Patent Well, LLC | 49 |
14 |
| ElringKlinger AG | 511 |
13 |
| Nippon Pillar Packing Co., Ltd. | 259 |
12 |
| Flexitallic Investments, Inc. | 90 |
11 |
| Nichias Corporation | 388 |
11 |
| Federal-Mogul Corporation | 335 |
8 |
| Reinz-Dichtungs-GmbH | 262 |
8 |
| Teadit N.A., Inc., AKA Teadit North America | 24 |
8 |
| kuk IL Inntot Co., Ltd. | 14 |
7 |
| GPT Industries, LLC | 34 |
7 |
| Carl Freudenberg KG | 1354 |
6 |
| Uchiyama Manufacturing Corp. | 124 |
6 |
| Valqua, Ltd. | 264 |
6 |
| Schlumberger Technology Corporation | 10263 |
5 |
| Dana Automotive Systems Group, LLC | 416 |
5 |
| Schul International Co., LLC | 82 |
5 |
| LGC US Asset Holdings, LLC | 53 |
5 |
| The Boeing Company | 19911 |
4 |
| Other owners | 322 |