- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/40 - Sealings between relatively-moving surfaces by means of fluid
Patent holdings for IPC class F16J 15/40
Total number of patents in this class: 442
10-year publication summary
|
49
|
42
|
39
|
34
|
32
|
21
|
26
|
17
|
23
|
15
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eagle Industry Co., Ltd. | 1142 |
32 |
| Stein Seal Company | 66 |
17 |
| Nuovo Pignone Tecnologie S.r.l. | 1023 |
11 |
| General Electric Company | 13865 |
10 |
| Rtx Corporation | 9529 |
10 |
| AES Engineering Ltd. | 85 |
9 |
| EagleBurgmann Germany GmbH & Co. KG | 340 |
9 |
| Mitsubishi Heavy Industries Compressor Corporation | 633 |
9 |
| NOK Corporation | 2237 |
8 |
| Siemens AG | 24363 |
7 |
| Mitsubishi Heavy Industries, Ltd. | 8847 |
7 |
| John Crane UK Limited | 86 |
7 |
| Siemens Energy Global GmbH & Co. KG | 3048 |
7 |
| Vetco Gray Scandinavia AS | 172 |
6 |
| Hilti Aktiengesellschaft | 3523 |
5 |
| John Crane Inc. | 99 |
5 |
| NTN Corporation | 4974 |
4 |
| IHI Corporation | 3462 |
4 |
| Seal-ryt Corporation | 35 |
4 |
| Inpro/Seal LLC | 86 |
4 |
| Other owners | 267 |