- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- 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: 565
10-year publication summary
|
44
|
69
|
45
|
47
|
51
|
33
|
47
|
22
|
21
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
82 |
| Oiles Corporation | 515 |
34 |
| The Patent Well, LLC | 47 |
14 |
| Flexitallic Investments, Inc. | 93 |
13 |
| ElringKlinger AG | 487 |
12 |
| Nippon Pillar Packing Co., Ltd. | 269 |
12 |
| Nichias Corporation | 386 |
11 |
| Federal-Mogul Corporation | 362 |
8 |
| Reinz-Dichtungs-GmbH | 245 |
8 |
| Teadit N.A., Inc., AKA Teadit North America | 24 |
8 |
| Carl Freudenberg KG | 1346 |
6 |
| kuk IL Inntot Co., Ltd. | 13 |
6 |
| Uchiyama Manufacturing Corp. | 119 |
6 |
| GPT Industries, LLC | 29 |
6 |
| Schlumberger Technology Corporation | 9690 |
5 |
| Dana Automotive Systems Group, LLC | 395 |
5 |
| Schul International Co., LLC | 78 |
5 |
| LGC US Asset Holdings, LLC | 49 |
5 |
| The Boeing Company | 19843 |
4 |
| Robert Bosch GmbH | 40953 |
4 |
| Other owners | 311 |