- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/00 - Sealings
Patent holdings for IPC class F16J 15/00
Total number of patents in this class: 988
10-year publication summary
|
86
|
99
|
96
|
86
|
87
|
74
|
51
|
57
|
39
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
51 |
| Rtx Corporation | 8674 |
18 |
| Siemens AG | 24990 |
15 |
| Eagle Industry Co., Ltd. | 1062 |
14 |
| Baker Hughes Incorporated | 5689 |
12 |
| Carl Freudenberg KG | 1346 |
12 |
| Caterpillar Inc. | 8877 |
11 |
| Aktiebolaget SKF | 2700 |
11 |
| Flowserve Management Company | 339 |
11 |
| Valqua, Ltd. | 252 |
10 |
| Robert Bosch GmbH | 40953 |
9 |
| NOF Corporation | 194 |
9 |
| Stein Seal Company | 69 |
9 |
| A.W. Chesterton Company | 80 |
8 |
| EagleBurgmann Germany GmbH & Co. KG | 314 |
8 |
| John Crane Inc. | 93 |
8 |
| Kalsi Engineering, Inc. | 50 |
8 |
| Burckhardt Compression AG | 116 |
7 |
| The Boeing Company | 19843 |
6 |
| Schaeffler Technologies AG & Co. KG | 8880 |
6 |
| Other owners | 745 |