- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- 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: 424
10-year publication summary
|
44
|
53
|
45
|
40
|
36
|
36
|
22
|
27
|
16
|
9
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eagle Industry Co., Ltd. | 1062 |
32 |
| Stein Seal Company | 69 |
17 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
10 |
| Rtx Corporation | 8674 |
10 |
| EagleBurgmann Germany GmbH & Co. KG | 314 |
9 |
| Mitsubishi Heavy Industries Compressor Corporation | 613 |
9 |
| General Electric Company | 18133 |
8 |
| Siemens AG | 24990 |
8 |
| AES Engineering Ltd. | 95 |
8 |
| NOK Corporation | 2108 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
7 |
| John Crane UK Limited | 73 |
7 |
| Vetco Gray Scandinavia AS | 177 |
6 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
5 |
| NTN Corporation | 5008 |
4 |
| NSK Ltd. | 2719 |
4 |
| Hilti Aktiengesellschaft | 3227 |
4 |
| A.W. Chesterton Company | 80 |
4 |
| John Crane Inc. | 93 |
4 |
| Seal-ryt Corporation | 32 |
4 |
| Other owners | 256 |