- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/00 - Sealings
Patent holdings for IPC class F16J 15/00
Total number of patents in this class: 1034
10-year publication summary
|
88
|
89
|
81
|
81
|
67
|
52
|
59
|
41
|
38
|
34
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2238 |
53 |
| Rtx Corporation | 9483 |
19 |
| Siemens AG | 24353 |
14 |
| Eagle Industry Co., Ltd. | 1134 |
14 |
| Valqua, Ltd. | 288 |
13 |
| Baker Hughes Incorporated | 5243 |
12 |
| Aktiebolaget SKF | 2988 |
12 |
| Caterpillar Inc. | 9644 |
11 |
| Carl Freudenberg KG | 1374 |
11 |
| Robert Bosch GmbH | 42826 |
9 |
| Flowserve Management Company | 195 |
9 |
| John Crane Inc. | 99 |
9 |
| NOF Corporation | 217 |
9 |
| EagleBurgmann Germany GmbH & Co. KG | 340 |
8 |
| Kalsi Engineering, Inc. | 55 |
8 |
| Schaeffler Technologies AG & Co. KG | 10035 |
7 |
| NTN Corporation | 4981 |
7 |
| Burckhardt Compression AG | 123 |
7 |
| Stein Seal Company | 67 |
7 |
| The Boeing Company | 20139 |
6 |
| Other owners | 789 |